Amorphous alloy for exterior part and preparation method of amorphous alloy

Abstract

The invention provides an amorphous alloy for an exterior part, the amorphous alloy comprises (Zr, Hf, Ti) a (Cu, Ni, Ti) b (Al, Nb) cRedMe, a, b, c, d and e are atomic percentages corresponding to the elements, and the sum of a, b, c, d and e is 100; re is one of Y, Pr, La and Ce, and M is one of Fe, Mn and Zn; the atomic percent ranges corresponding to the elements are 52 < = a < = 62, 25 < = b < = 35, 12 < = c < = 20, 0.1 < = d < = 0.5, and 0.1 < = e < = 0.2. The invention further provides a preparation method of the amorphous alloy. The preparation method comprises the steps of raw material weighing according to the formula, high-purity vacuum melting, rapid cooling and the like. According to the amorphous alloy and the preparation method thereof, the technical problems that in the prior art, appearance components prepared from amorphous alloy materials are low in appearance yield, poor in mechanical property and insufficient in forming ability are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of bulk amorphous alloys, and in particular relates to an amorphous alloy for appearance parts and a preparation method thereof. Background Art

[0002] Amorphous alloys are finding applications in precision structural components due to their high strength and hardness, good corrosion resistance, excellent wear resistance, high elastic strain limit, and good formability. As a new alloy material, amorphous alloys are not only thriving in consumer electronics, where structural components such as folding screen hinges, mobile phone card trays, and midframes achieve the harmonious balance of high strength and lightweight design. They are also gaining widespread application in the automotive and medical device sectors.

[0003] In recent years, with the increasing demand for amorphous alloys in the fields of electrical, electronic, and automotive, the amorphous alloy market has been gradually expanded, and higher and wider requirements have been placed on the application scope of amorphous alloys. After simple mechanical polishing, the surface of amorphous alloy parts can have a soft and beautiful metallic luster effect. Therefore, many research institutions are now developing their applications as appearance parts. For example, due to the increasing requirements for appearance parts of products such as smartphones and tablets, amorphous alloys have high strength, wear resistance, and corrosion resistance. They can simultaneously meet the durability and aesthetic requirements of consumer electronic product appearance parts. At the same time, the excellent forming properties of amorphous alloys enable them to meet the design of various complex structures, making them an excellent manufacturing material for precision components.

[0004] The use of amorphous alloys as raw materials for manufacturing precision components with appearance requirements is not always smooth sailing. There are two major limitations: First, when commercial amorphous alloy raw materials in the existing technology are used as appearance parts, the extremely small particles of inclusions and impurities generated during the casting process result in a low appearance yield of the cast parts. The yield of amorphous appearance parts after post-processing is often less than 50%, which limits their application. Second, the oxygen content and forming capacity of commercial amorphous alloy raw materials in the existing technology are insufficient to meet the stringent requirements as raw materials for appearance parts. Although some appearance parts meet the requirements, their structural and mechanical properties cannot meet the design requirements, which further reduces the overall product yield. These two constraints have prevented the application of amorphous alloy raw materials in the existing technology from being expanded in the field of appearance precision structural parts with certain functional requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide an amorphous alloy for appearance parts and a preparation method, aiming to solve the technical problems in the prior art of appearance components prepared from amorphous alloy materials, such as low appearance yield, poor mechanical properties, and insufficient forming ability.

[0006] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows: The present invention provides an amorphous alloy for appearance parts, wherein the composition of the amorphous alloy is (Zr, Hf, Ti) a (Cu, Ni, Ti) b (Al, Nb) c Re d M e , where a, b, c, d, and e are the atomic percentages of the elements, and the sum of a, b, c, d, and e is 100; Re is one of Y, Pr, La, and Ce, and M is one of Fe, Mn, and Zn; the atomic percentages of the elements are in the range of 52 ≤ a ≤ 62, 25 ≤ b ≤ 35, 12 ≤ c ≤ 20, 0.1 ≤ d ≤ 0.5, and 0.1 ≤ e ≤ 0.2; In the composition of the amorphous alloy, the atomic percentage ratio of Zr, Hf, and Ti in the main alloying elements is (85-90):5:(5-10); the atomic percentage ratio of Cu, Ni, and Ti in the secondary alloying elements is (50-70):(25-35):(5-15); and the atomic percentage ratio of Al and Nb in the first auxiliary added element group is (70-75):(25-30).

[0007] The amorphous alloy provided by the present invention is composed of main alloying elements, secondary alloying elements and auxiliary added elements. The above components are not directly mixed during the preparation process, but are mixed and added after forming their own stable and uniform alloy compositions. In the amorphous alloy of the present invention, the main alloying elements Zr, Hf and Ti account for the highest proportion, constituting the basic alloy network of the amorphous alloy in the present invention, which determines the basic performance of the amorphous alloy, i.e., high strength and good corrosion resistance. Secondary alloying elements Cu, Ni and Ti participate in the composition of the basic alloy network, improve the corrosion resistance and wear resistance of the alloy, and can also synergize with other elements to further regulate and improve the performance. And adding Ti element to both the main alloying elements and the secondary alloying elements can utilize the oxygen absorption performance of Ti element in the preparation process, combine it with oxygen element and then cooperate with slag scooping process, which can greatly reduce the oxygen content of the amorphous alloy, thereby reducing the adverse effects of oxygen element on the amorphous alloy. The first auxiliary additive element group, Al and Nb, features low density and high specific strength. This reduces the alloy's density, increases its specific strength, and improves strength and processability. Most importantly, the Al-Nb combination reduces the difficulty of amorphous melting. This auxiliary additive group effectively fuses the other components and promotes rapid homogenization of the amorphous melt during melting. The rare earth element Re, although present in small amounts, significantly impacts the alloy's properties. It adsorbs impurities during solidification and makes the alloy's structure more uniform, thereby improving overall properties such as strength and toughness. The addition of the trace element M is a double-edged sword for the construction of amorphous alloys. Controlling it to a certain level can effectively improve the alloy's wear and corrosion resistance and reduce surface defects in cast parts (inhibiting crystallization). However, an inappropriate amount can increase the alloy's magnetism and lead to heterogeneous nucleation during solidification, leading to crystallization. Therefore, in the present invention, the trace element M is added at a very low level and is a single element from Fe, Mn, or Zn to avoid excessive alloy entropy caused by the addition of multiple trace elements.

[0008] The present invention also strictly defines the atomic percentage ranges of the primary alloying elements, secondary alloying elements, and the first auxiliary additive element. These include a primary alloying element atomic percentage ratio of Zr, Hf, and Ti of (85-90):5:(5-10), a secondary alloying element atomic percentage ratio of Cu, Ni, and Ti of (50-70):(25-35):(5-15), and a primary auxiliary additive element atomic percentage ratio of Al and Nb of (70-75):(25-30). By rationally adjusting the ratios of the primary alloying elements, secondary alloying elements, and the first auxiliary additive element, the amorphous alloy of the present invention can be obtained to exhibit excellent overall properties, including high strength, high corrosion resistance, and good processability. This is a key technical factor in enhancing amorphous forming ability.

[0009] Preferably, the atomic percentage range of each element in the composition of the amorphous alloy is 52≤a≤55, 29≤b≤33, 14≤c≤16, 0.1≤d≤0.5, and 0.1≤e≤0.2. Amorphous alloys with the above atomic percentage content ranges have good appearance, mechanical properties, and forming ability, especially the best mechanical properties.

[0010] More preferably, the atomic percentage range of each element in the composition of the amorphous alloy is 56 ≤ a ≤ 62, 25 ≤ b ≤ 28, 12 ≤ c ≤ 16, 0.1 ≤ d ≤ 0.5, and 0.1 ≤ e ≤ 0.2. Amorphous alloys with the above atomic percentage content ranges have good appearance, mechanical properties, and formability, especially the highest formability.

[0011] Furthermore, the composition of the amorphous alloy does not include B, Mg, and Ca, and the total atomic percentage of the above elements in the amorphous alloy is not higher than 0.001%; the composition of the amorphous alloy does not include V, Mo, Ag, and W, and the total atomic percentage of the above elements in the amorphous alloy is not higher than 0.001%. Elements such as B, Mg, and Ca are easily burned, volatile, and hygroscopic. The content of these impurities must be strictly controlled, otherwise the oxygen content and purity of the amorphous alloy will be affected. Elements such as V, Mo, Ag, and W are extremely difficult to melt and difficult to disperse evenly during the smelting process. They tend to form separate clumps, especially when Nb is present in the amorphous alloy. Refractory elements such as V, Mo, Ag, and W not only do not disperse during the smelting process but also "sink" to the bottom of the crucible. The content of these impurities must be strictly controlled, otherwise the oxygen content and purity of the amorphous alloy will be affected.

[0012] Furthermore, the amorphous alloy does not contain Be. The Be element seriously affects the flowability and mechanical properties of the amorphous melt in the present invention. Therefore, the presence of Be must be strictly controlled in the amorphous alloy for the appearance part in the present invention.

[0013] Furthermore, the oxygen content of the amorphous alloy is 80-200 PPM, and the glass-forming capability is 12-20 mm. Tests have shown that the oxygen content of the amorphous alloy of the present invention is extremely low, and the glass-forming capability can reach up to 20 mm.

[0014] The present invention also provides a method for preparing the amorphous alloy for the appearance part, comprising the following steps: Weigh the raw materials according to the composition of the amorphous alloy. The composition of the amorphous alloy is (Zr, Hf, Ti) a (Cu, Ni, Ti) b (Al, Nb) c Re d M e, where a, b, c, d, and e are the atomic percentages of the elements, and the sum of a, b, c, d, and e is 100; Re is one of Y, Pr, La, and Ce, and M is one of Fe, Mn, and Zn; the atomic percentages of the elements are in the range of 52 ≤ a ≤ 62, 25 ≤ b ≤ 35, 12 ≤ c ≤ 20, 0.1 ≤ d ≤ 0.5, and 0.1 ≤ e ≤ 0.2; In the composition of the amorphous alloy, the atomic percentage ratio of Zr, Hf, and Ti in the main alloying elements is (85-90):5:(5-10); the atomic percentage ratio of Cu, Ni, and Ti in the secondary alloying elements is (50-70):(25-35):(5-15); the atomic percentage ratio of Al and Nb in the first auxiliary additive element group is (70-75):(25-30); Wherein Zr, Hf, and Ti are main alloy raw materials, Cu, Ni, and Ti are secondary alloy raw materials, Al and Nb are first auxiliary additive raw materials, Re is second auxiliary additive raw material, and M is third auxiliary additive raw material. After the above raw materials are smelted uniformly according to the proportion, they are added into the vacuum melting furnace in the order of main alloy raw material, secondary alloy raw material, first auxiliary additive raw material, second auxiliary additive raw material, and third auxiliary additive raw material. After all the raw materials are added, they are smelted in the vacuum melting furnace for 2 to 3 times until the melt is uniform. The slag is removed 1 to 3 times in the early, middle, and late stages of the smelting process. After the last slag removal is completed, the melt is poured into the mold and quickly cooled to room temperature in the mold to obtain the desired amorphous alloy raw material.

[0015] The preparation method of the present invention combines controlled composition of the amorphous alloy, sequentially adding materials for smelting after individual smelting, and strict deoxidation and slag removal to produce a low-oxygen, uniform amorphous alloy raw material. The preparation method of the present invention particularly emphasizes timely slag removal at each stage of smelting.

[0016] In the prior art, the smelting process for amorphous alloy raw materials (also known as master alloy smelting) involves mixing all elemental raw materials according to the alloying ratio and melting them to form a uniform ingot. The large ingot is then broken into small particles using various crushing techniques to serve as raw material for subsequent casting (die casting, pouring, or suction casting). Amorphous phases form during the casting process, so the prior art focuses on achieving uniform melting of the amorphous alloy raw materials. The preparation method of the present invention emphasizes removing the large amount of oxide scum generated by the addition of Re in the early stages of the smelting process, removing oxide and insoluble sediment generated during the mixing process in the middle stages, and removing scum from the melt surface in the late stages. Through slag removal at different stages, the melt is purified, reducing the oxygen content of the amorphous melt and the impurities in the amorphous master alloy that can serve as nuclei to trigger crystallization to extremely low levels. Finally, the melt is rapidly cooled in a mold, resulting in a primary amorphous state after cooling, which inhibits the intrusion and aggregation of oxygen atoms. This treatment effectively enhances the forming ability of the amorphous alloy.

[0017] Furthermore, the mold adopts one or more cooling methods selected from water cooling, oil cooling, and air cooling, and the cooling rate of the melt in the mold is 40-100°C / s. The cooling method can be set according to the mold design; as long as the cooling rate is controlled, the desired effect can be achieved.

[0018] Furthermore, the amorphous alloy raw material is formed into a flat plate, a strip, or a column. Vacuum melting furnaces with a capacity of 100 kg or more are preferably used to form the amorphous alloy raw material into a flat plate, which can then be crushed using mechanical equipment such as a jaw crusher. Vacuum melting furnaces with a capacity of less than 100 kg, such as the common 50 kg and 30 kg melting furnaces, are preferably used for flexible and diverse raw material shapes, facilitating the formation of strips, columns, and other shapes that are easily divisible into raw material particles of the same mass, making them suitable for customized projects.

[0019] Furthermore, the obtained amorphous alloy raw material is crushed into 2-5 cm pieces as raw materials for the amorphous alloy die-casting process. The 2-5 cm piece size is most conducive to mechanical screening by a material separator.

[0020] The technical solution of the amorphous alloy for appearance parts provided by the present invention controls the microscopic atomic arrangement inside the amorphous alloy by precisely regulating the alloy composition, so that the amorphous alloy has a uniform and continuous amorphous atomic structure during the production process, so that the material surface can show a high degree of consistency and smoothness, greatly reducing the appearance defects caused by internal defects. At the same time, the amorphous alloy in the present invention and the amorphous alloy prepared by the preparation method thereof are uniform and have extremely high forming ability. The general forming ability of existing commercial amorphous is 6~10mm, while the forming ability of the amorphous in the present invention reaches up to 20mm. This enables the amorphous alloy in the present invention to be prepared under a wider range of conditions and can produce amorphous products of larger sizes and more complex shapes, expanding the application scope and potential of amorphous materials in various fields.

[0021] The amorphous alloy preparation method of the present invention effectively removes oxygen and impurities from the alloy material through optimized processes, significantly reducing the dissolution and diffusion of oxygen in the material. During the formation of the amorphous master alloy, the rapid solidification of atoms also inhibits the intrusion and aggregation of oxygen atoms. The oxygen content of the amorphous alloy produced using the method of the present invention can be reduced to 1 / 4 to 1 / 3 of that of existing technologies (current commercial amorphous master alloys have an oxygen content of 300 to 500 ppm). This reduces the formation of oxide impurities, thereby improving the material's chemical stability, corrosion resistance, and electrical properties, extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the XRD test pattern of the 20 mm cast rod in Example 18 of the present invention; Figure 2 This is the XRD test pattern of the 18 mm cast rod in Example 19 of the present invention; Figure 3 This is the XRD test pattern of the 12 mm cast rod in Comparative Example 1 of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and technical effect of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention is clearly and completely described. The embodiments described below are part of the embodiments of the present invention, rather than all the embodiments. In combination with the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. If the specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or the conditions recommended by the manufacturer; if the manufacturer of the reagents or instruments is not specified, they are all conventional products that can be purchased commercially.

[0024] It should be understood that the weights of the relevant components mentioned in the embodiments of the present invention may not only refer to the specific content of each component, but also represent the weight ratio between the components. Therefore, as long as the content of the relevant components is proportionally increased or decreased according to the embodiments of the present invention, it is within the scope of the present invention. Specifically, the weights described in the embodiments of the present invention may be mass units known in the chemical industry, such as μg, mg, g, and kg.

[0025] In addition, unless the context clearly requires otherwise, expressions in the singular form of a word should be understood to include the plural form of the word. The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, element, part, or combination thereof, but are not used to exclude the presence or possibility of adding one or more other features, numbers, steps, operations, elements, parts, or combinations thereof.

[0026] This embodiment provides a series of amorphous alloys for exterior parts. The composition, preparation method, and testing method of the amorphous alloys in the embodiments of the present invention will be described in detail below.

[0027] The materials used in the embodiment are sponge zirconium (purity 99.9wt%), hafnium with a purity of 99.9wt%, titanium, copper, nickel, aluminum, beryllium, niobium, iron, and industrial-grade rare earth elements (Y, Pr, La, Ce, purity of about 99wt%). The high purity of these materials can effectively reduce the interference of impurities on the experimental results, ensuring the accuracy and reliability of the experimental data.

[0028] Example 1 In this embodiment, the alloy composition is (Zr, Hf, Ti) 52.0 (Cu, Ni, Ti) 35.0 (Al, Nb) 12.4 Y 0.5 Fe 0.1 The atomic percentage ratio of Zr, Hf, and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni, and Ti in the secondary alloying elements is 50:35:15; and the atomic percentage ratio of Al and Nb in the first auxiliary additive element group is 75:25. The preparation method and test characterization method of the alloy are as follows: According to the alloy composition in Example 1, the atomic percentage of each element in the entire alloy is first calculated, and then the atomic percentage of each element is converted into mass percentage. In this embodiment, the atomic percentage of each element is: The raw materials are weighed according to the above formula ratio, with the Ti raw material divided into two parts according to the ratio of the main alloy raw material and the secondary alloy raw material.

[0029] It should be noted that, in the above-mentioned result of converting the atomic percentage into the mass percentage, due to rounding in the calculation process, some conversion results will produce a mass percentage and cannot accurately meet the requirement of 100.00wt%. The processing method in the actual production process is: according to the number of calculated mass percentages, the proportional conversion and weighing are sufficient. For example, the calculated value of the mass percentage of Y in this embodiment is 0.60 wt%, then under the condition of setting the total value of 100g of amorphous raw material, 0.60g of Y raw material is weighed, and the total value of 200g of amorphous raw material is weighed 1.20g of Y raw material, and so on. It should be clear to those skilled in the art that the above situation is an unavoidable error caused by the calculation process, which meets the requirements of calculation accuracy, and the slight error in the accuracy does not affect the identification of the amorphous alloy composition in this embodiment (in the actual smelting production process, the error caused by the calculation is almost negligible).

[0030] The above-mentioned raw materials must undergo strict incoming material inspection. ICP testing must confirm that the amorphous alloy composition does not contain B, Mg, or Ca, and the combined atomic percentage of these elements in the amorphous alloy does not exceed 0.001%. Furthermore, the amorphous alloy composition does not contain V, Mo, Ag, or W, and the combined atomic percentage of these elements in the amorphous alloy does not exceed 0.001%. Furthermore, ICP testing cannot detect Be (below the detection limit).

[0031] Among them, Zr, Hf, and Ti are main alloy raw materials, Cu, Ni, and Ti are secondary alloy raw materials, Al and Nb are the first auxiliary additive raw materials, Y is the second auxiliary additive raw material, and Fe is the third auxiliary additive raw material. After the above raw materials are melted evenly according to the proportion, they are put into the vacuum melting furnace in the order of main alloy raw material, secondary alloy raw material, first auxiliary additive raw material, second auxiliary additive raw material, and third auxiliary additive raw material. After all the raw materials are put into the vacuum melting furnace, they are melted three times in the vacuum melting furnace until the melt is uniform. The slag is removed once in the early, middle and late stages of the melting process.

[0032] After the last slag removal is completed, the melt is poured into a mold and cooled to room temperature at a cooling rate of about 60°C / s in a water-cooled mold to obtain the desired amorphous alloy raw material.

[0033] The cavity of the amorphous alloy raw material forming mold used in the embodiment of the present invention is flat, and is crushed into 2-5 cm pieces by a jaw crusher as raw materials for the amorphous alloy casting process.

[0034] An oxygen and nitrogen analyzer is used to measure the oxygen content of each batch of amorphous alloy and obtain corresponding data.

[0035] Crushed amorphous alloy scrap is cast into cast rods with diameters of 12mm, 14mm, 16mm, 18mm, and 20mm using a copper mold casting method. The copper mold's excellent thermal conductivity allows the alloy to rapidly cool and solidify. XRD testing of the cast rods and analysis of the diffraction patterns reveal the alloy's crystal structure and phase composition, providing a basis for understanding the alloy's microstructural characteristics. For example, if the XRD test reveals that an 18mm cast rod of the amorphous alloy is amorphous, while a 20mm cast rod is still non-amorphous, the maximum glass-forming ability of the amorphous alloy can be assumed to be 18mm. This serves as the basic criterion for evaluating glass-forming ability.

[0036] The obtained amorphous alloy was die-casted using a vacuum die-casting machine to produce an amorphous part with a length of 100 mm, a width of 2 mm, and a thickness of 5 mm, and its appearance and performance were evaluated.

[0037] Example 2 In this embodiment, the alloy composition is (Zr, Hf, Ti) 52.0 (Cu, Ni, Ti) 33.0 (Al, Nb) 14.8 Y 0.1 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 88:5:7; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 60:30:10; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0038] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 55.90 wt%, Hf 6.21 wt%, Ti 4.45 wt%, Cu 16.85wt%, Ni 7.78wt%, Al 4.01 wt%, Nb 4.60 wt%, Y 0.12 wt%, and Fe 0.07 wt%.

[0039] The amorphous preparation and testing processes in this embodiment and subsequent embodiments are substantially the same as those in Example 1, except that the number of slag removal operations is adjusted according to the actual smelting conditions (at least once and no more than three times in each of the early, middle, and late stages), and the cooling rate is reasonably varied within the range of 60-100°C / s according to the actual conditions at the smelting site, which will not be further described in the following embodiments.

[0040] Example 3 In this embodiment, the alloy composition is (Zr, Hf, Ti) 52.5 (Cu, Ni, Ti) 32.8 (Al, Nb) 14.0 Y 0.5 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 90:5:5; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0041] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 56.46 wt%, Hf 6.14 wt%, Ti 2.67 wt%, Cu 19.12wt%, Ni 6.30wt%, Al 3.46 wt%, Nb 5.11 wt%, Y 0.58 wt%, and Fe 0.15 wt%.

[0042] Example 4 In this embodiment, the alloy composition is (Zr, Hf, Ti) 53.0 (Cu, Ni, Ti) 31.5 (Al, Nb) 15.0 Pr 0.3 Zn 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 90:5:5; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 72.5:27.5.

[0043] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 57.85 wt%, Hf 6.29 wt%, Ti 2.69 wt%, Cu 18.63wt%, Ni 6.14wt%, Al 3.90 wt%, Nb 5.10 wt%, Pr 0.56 wt%, and Zn 0.17 wt%.

[0044] Example 5 In this embodiment, the alloy composition is (Zr, Hf, Ti) 53.4 (Cu, Ni, Ti) 30.6 (Al, Nb) 15.5 La 0.3 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 90:5:5; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0045] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 57.42 wt%, Hf 6.24 wt%, Ti 2.63 wt%, Cu 17.83 wt%, Ni5.88 wt%, Al 3.83 wt%, Nb 5.66 wt%, La 0.35 wt%, Fe 0.15 wt%.

[0046] Example 6 In this embodiment, the alloy composition is (Zr, Hf, Ti) 54.0 (Cu, Ni, Ti) 29.5 (Al, Nb) 16.0 Ce 0.3 Mn 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0047] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 55.62 wt%, Hf 6.40 wt%, Ti 4.37 wt%, Cu 17.43 wt%, Ni 5.75 wt%, Al 4.01 wt%, Nb 5.92 wt%, Ce 0.35 wt%, and Mn 0.15 wt%.

[0048] Example 7 In this embodiment, the alloy composition is (Zr, Hf, Ti) 54.5 (Cu, Ni, Ti) 25.0 (Al, Nb) 20.0 Y 0.3 Mn 0.2The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0049] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 56.46 wt%, Hf 6.50 wt%, Ti 4.29 wt%, Cu 14.86 wt%, Ni 4.90 wt%, Al 5.05 wt%, Nb 7.44 wt%, Y 0.35 wt%, and Mn 0.15 wt%.

[0050] Example 8 In this embodiment, the alloy composition is (Zr, Hf, Ti) 54.6 (Cu, Ni, Ti) 29.9 (Al, Nb) 15.0 Y 0.3 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0051] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 56.00 wt%, Hf 6.44 wt%, Ti 4.40 wt%, Cu 17.60 wt%, Ni 5.80wt%, Al 3.74 wt%, Nb 5.52 wt%, Y 0.35 wt%, and Fe 0.15 wt%.

[0052] Example 9 In this embodiment, the alloy composition is (Zr, Hf, Ti) 55.0 (Cu, Ni, Ti) 29.0 (Al, Nb) 15.5 Y 0.3 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 90:5:5; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0053] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 58.75 wt%, Hf 6.38 wt%, Ti 2.62 wt%, Cu 16.78wt%, Ni 5.54wt%, Al 3.81 wt%, Nb 5.62 wt%, Y 0.35 wt%, and Fe 0.15 wt%.

[0054] Example 10 In this embodiment, the alloy composition is (Zr, Hf, Ti) 55.5 (Cu, Ni, Ti) 25.0 (Al, Nb) 19.2 Y 0.2 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0055] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 57.19wt%, Hf 6.58 wt%, Ti 4.32wt%, Cu 14.78wt%, Ni 4.87 wt%, Al 4.82 wt%, Nb 7.11 wt%, Y 0.24 wt%, and Fe 0.07 wt%.

[0056] Example 11 In this embodiment, the alloy composition is (Zr, Hf, Ti) 56.0 (Cu, Ni, Ti) 28.0 (Al, Nb) 15.7 Y 0.2 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 60:30:10; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0057] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 57.41 wt%, Hf 6.61 wt%, Ti 5.32 wt%, Cu 14.12 wt%, Ni 6.52 wt%, Al 3.92 wt%, Nb 5.79 wt%, Y 0.24 wt%, and Fe 0.07 wt%.

[0058] Example 12 In this embodiment, the alloy composition is (Zr, Hf, Ti) 56.7 (Cu, Ni, Ti) 26.6 (Al, Nb) 16.0 Y 0.5 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0059] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 57.73wt%, Hf 6.64wt%, Ti 4.40 wt%, Cu 15.54 wt%, Ni 5.13wt%, Al 3.97 wt%, Nb 5.86 wt%, Y 0.58 wt%, and Fe 0.15 wt%.

[0060] Example 13 In this embodiment, the alloy composition is (Zr, Hf, Ti) 57.0 (Cu, Ni, Ti) 26.5 (Al, Nb) 16.0 Y 0.3 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0061] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 58.01 wt%, Hf 6.68 wt%, Ti 4.41 wt%, Cu 15.47 wt%, Ni 5.10 wt%, Al 3.97 wt%, Nb 5.86 wt%, Y 0.35 wt%, and Fe 0.15 wt%.

[0062] Example 14 In this embodiment, the alloy composition is (Zr, Hf, Ti) 57.6 (Cu, Ni, Ti) 27.0 (Al, Nb) 15.0 Y 0.3 Fe 0.1The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 60:30:10; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0063] Similarly, the atomic percentage of each element in the entire alloy is first calculated, and then the atomic percentage of each element is converted into mass percentage: Zr 58.59 wt%, Hf 6.74 wt%, Ti 5.31 wt%, Cu 13.51 wt%, Ni 6.24wt%, Al 3.72 wt%, Nb 5.48 wt%, Y 0.35 wt%, and Fe 0.07wt%.

[0064] Example 15 In this embodiment, the alloy composition is (Zr, Hf, Ti) 58.0 (Cu, Ni, Ti) 26.3 (Al, Nb) 15.0 Pr 0.5 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 60:30:10; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0065] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 58.65wt%, Hf 6.75wt%, Ti 5.26 wt%, Cu 13.08 wt%, Ni 6.04 wt%, Al 3.70wt%, Nb 5.45 wt%, Pr 0.92 wt%, Fe 0.15 wt%.

[0066] Example 16 In this embodiment, the alloy composition is (Zr, Hf, Ti) 58.8 (Cu, Ni, Ti) 25.8 (Al, Nb) 15.0 Ce 0.3 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 60:30:10; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0067] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 59.78 wt%, Hf 6.88 wt%, Ti 5.31 wt%, Cu 12.90 wt%, Ni 5.96 wt%, Al 3.98 wt%, Nb 4.57 wt%, Ce 0.55 wt%, Fe 0.07 wt%.

[0068] Example 17 In this embodiment, the alloy composition is (Zr, Hf, Ti) 59.0 (Cu, Ni, Ti) 25.0 (Al, Nb) 15.4 Y 0.5 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 70:30.

[0069] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 59.48 wt%, Hf 6.84 wt%, Ti 4.45 wt%, Cu 14.46 wt%, Ni 4.77 wt%, Al 3.78 wt%, Nb 5.58 wt%, Y 0.58 wt%, and Fe 0.07 wt%.

[0070] Example 18 In this embodiment, the alloy composition is (Zr, Hf, Ti) 59.5 (Cu, Ni, Ti) 25.3 (Al, Nb) 14.5 Y 0.5 Zn 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0071] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 60.13wt%, Hf 6.92 wt%, Ti 4.50wt%, Cu 14.67 wt%, Ni 4.84 wt%, Al 3.82 wt%, Nb 4.39 wt%, Y 0.38 wt%, and Zn 0.17 wt%.

[0072] Example 19 In this embodiment, the alloy composition is (Zr, Hf, Ti) 60.0 (Cu, Ni, Ti) 25.0 (Al, Nb) 14.4 Y 0.5 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0073] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 60.50wt%, Hf 6.97wt%, Ti 4.51wt%, Cu 14.46wt%, Ni 4.77wt%, Al 3.79wt%, Nb 4.35wt%, Y 0.58wt%, and Fe 0.07wt%.

[0074] Example 20 In this embodiment, the alloy composition is (Zr, Hf, Ti) 60.5 (Cu, Ni, Ti) 26.9 (Al, Nb) 12.0 Y 0.5 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0075] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 60.55 wt%, Hf 6.97 wt%, Ti 4.58 wt%, Cu 15.44 wt%, Ni5.09wt%, Al 3.13 wt%, Nb 3.60 wt%, Y 0.57 wt%, and Fe 0.07 wt%.

[0076] Example 21 In this embodiment, the alloy composition is (Zr, Hf, Ti) 61.0 (Cu, Ni, Ti) 25.0 (Al, Nb) 13.5 Y 0.4 Fe 0.1The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 85:5:10; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0077] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 61.16wt%, Hf 7.04wt%, Ti 4.56wt%, Cu 14.38wt%, Ni 4.74wt%, Al 3.54wt%, Nb 4.05wt%, Y 0.46wt%, Fe 0.07wt%.

[0078] Example 22 In this embodiment, the alloy composition is (Zr, Hf, Ti) 61.3 (Cu, Ni, Ti) 26.0 (Al, Nb) 12.1 Y 0.5 Fe 0.1 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 88:5:7; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0079] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 62.69 wt%, Hf 6.97 wt%, Ti 3.41 wt%, Cu 14.73 wt%, Ni 4.86wt%, Al 3.12 wt%, Nb 3.58 wt%, Y 0.57 wt%, and Fe 0.07wt%.

[0080] Example 23 In this embodiment, the alloy composition is (Zr, Hf, Ti) 62.0 (Cu, Ni, Ti) 25.3 (Al, Nb) 12.0 Y 0.5 Fe 0.2 The atomic percentage ratio of Zr, Hf and Ti in the main alloying elements is 88:5:7; the atomic percentage ratio of Cu, Ni and Ti in the secondary alloying elements is 70:25:5; the atomic percentage ratio of Al and Nb in the first auxiliary added element group is 75:25.

[0081] Similarly, first calculate the atomic percentage of each element in the entire alloy, and then convert the atomic percentage of each element into mass percentage: Zr 63.21 wt%, Hf 7.03 wt%, Ti 3.41 wt%, Cu 14.30 wt%, Ni 4.72 wt%, Al 3.08 wt%, Nb 3.54 wt%, Y 0.57 wt%, and Fe 0.14 wt%.

[0082] Comparative Example 1 Alloy composition is Zr 65 Cu 20 Al 10 Ni4Y1 was made into a master alloy using the existing process (no slag removal) in a vacuum melting furnace, and its oxygen content and amorphous glass-forming ability were tested. Sheets were made using a vacuum die-casting machine, and amorphous parts with a length of 100 mm, a width of 2 mm, and a thickness of 5 mm were also made to evaluate their appearance and performance.

[0083] Comparative Example 2 Alloy composition is Zr 65 Cu 18 Al 10 Ni4Y2Fe1 was made into a master alloy using the existing process (no slag removal) in a vacuum melting furnace, and its oxygen content and amorphous glass-forming ability were tested. Sheets were made using a vacuum die-casting machine, and amorphous parts with a length of 100 mm, a width of 2 mm, and a thickness of 5 mm were also made, and their appearance and performance were evaluated.

[0084] The test results of the embodiments and comparative examples of the present invention are as follows.

[0085] Example No. Master alloy oxygen content (PPM) Glass forming ability (mm) Appearance evaluation results 1 95.9 18 The surface is bright, without visible spots, black spots and other defects 2 152.8 18 The surface is bright, without visible spots, black spots and other defects 3 108.1 16 The surface is bright, without visible spots, black spots and other defects 4 113.3 18 The surface is bright, without visible spots, black spots and other defects 5 138.2 18 The surface is bright, without visible spots, black spots and other defects 6 104.7 18 The surface is bright, without visible spots, black spots and other defects 7 118.0 16 The surface is bright, without visible spots, black spots and other defects 8 101.3 16 The surface is bright, without visible spots, black spots and other defects 9 125.7 16 The surface is bright, without visible spots, black spots and other defects 10 184.9 16 The surface is bright, without visible spots, black spots and other defects 11 111.5 16 The surface is bright, without visible spots, black spots and other defects 12 85.7 14 The surface is bright, without visible spots, black spots and other defects 13 114.4 16 The surface is bright, without visible spots, black spots and other defects 14 107.3 18 The surface is bright, without visible spots, black spots and other defects 15 108.6 16 The surface is bright, without visible spots, black spots and other defects 16 100.8 18 The surface is bright, without visible spots, black spots and other defects 17 89.4 16 The surface is bright, without visible spots, black spots and other defects 18 80.3 20 The surface is bright, without visible spots, black spots and other defects 19 92.8 18 The surface is bright, without visible spots, black spots and other defects 20 94.3 18 The surface is bright, without visible spots, black spots and other defects 21 105.3 18 The surface is bright, without visible spots, black spots and other defects 22 104.7 18 The surface is bright, without visible spots, black spots and other defects 23 107.2 18 The surface is bright, without visible spots, black spots and other defects Comparative Example 1 389.6 10 The surface is bright, with occasional obvious black spots and stripes, which are more obvious on the sides than in the middle. Comparative Example 2 354.7 10 The surface is bright, with occasional obvious black spots and stripes, which are more obvious on the sides than in the middle. As attached Figure 1 The XRD test pattern of the 20 mm cast rod in Example 18 is shown, showing that the cast rod is amorphous. Figure 2 The figure shows the XRD test pattern of the 18 mm cast rod in Example 19, which shows that the cast rod is still amorphous.

[0086] As attached Figure 3 The XRD pattern of the 12 mm cast rod in Comparative Example 1 is shown. The test results show that it is severely crystallized, while the 10 mm cast rod is amorphous. The test results of Comparative Example 2 are similar to those of Comparative Example 1.

[0087] It can be seen from the above examples that the amorphous alloy and the preparation method thereof in the present invention are uniform, have good appearance and have extremely high forming ability, with a forming ability of up to 20 mm, and the appearance effect of visual inspection is better than that of the prior art. The amorphous alloy in the present invention can be prepared under wider conditions, and amorphous products with larger sizes and more complex shapes can be prepared, which expands the application scope and potential of amorphous materials in various fields. The amorphous preparation method in the present invention effectively excludes oxygen elements and impurities in the alloy material by optimizing the process, thereby improving the purity of the amorphous alloy. The oxygen content of the amorphous alloy prepared by the method in the present invention can be reduced to 1 / 4 - 1 / 3 of the prior art, reducing the generation of oxide impurities, thereby improving the chemical stability, corrosion resistance and electrical properties of the material and extending the service life of the material.

[0088] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An amorphous alloy for appearance parts, characterized in that: The composition of the amorphous alloy is (Zr, Hf, Ti) a (Cu, Ni, Ti) b (Al, Nb) c Re d M e , where a, b, c, d, and e are the atomic percentages of the elements, and the sum of a, b, c, d, and e is 100; Re is one of Y, Pr, La, and Ce, and M is one of Fe, Mn, and Zn; the atomic percentages of the elements are in the range of 52 ≤ a ≤ 62, 25 ≤ b ≤ 35, 12 ≤ c ≤ 20, 0.1 ≤ d ≤ 0.5, and 0.1 ≤ e ≤ 0.2; In the composition of the amorphous alloy, the atomic percentage ratio of Zr, Hf, and Ti in the main alloying elements is (85-90):5:(5-10); the atomic percentage ratio of Cu, Ni, and Ti in the secondary alloying elements is (50-70):(25-35):(5-15); and the atomic percentage ratio of Al and Nb in the first auxiliary added element group is (70-75):(25-30).

2. The amorphous alloy for appearance parts according to claim 1, characterized in that: In the composition of the amorphous alloy, the atomic percentage of each element is in the range of 52≤a≤55, 29≤b≤33, 14≤c≤16, 0.1≤d≤0.5, and 0.1≤e≤0.

2.

3. The amorphous alloy for appearance parts according to claim 1, characterized in that: In the composition of the amorphous alloy, the atomic percentage of each element is in the range of 56≤a≤62, 25≤b≤28, 12≤c≤16, 0.1≤d≤0.5, and 0.1≤e≤0.

2.

4. The amorphous alloy for appearance parts according to any one of claims 1 to 3, characterized in that: The composition of the amorphous alloy does not include B, Mg, and Ca elements, and the total atomic percentage of the above elements in the amorphous alloy is not higher than 0.001%; the composition of the amorphous alloy does not include V, Mo, Ag, and W elements, and the total atomic percentage of the above elements in the amorphous alloy is not higher than 0.001%.

5. The amorphous alloy for appearance parts according to claim 4, characterized in that: The amorphous alloy does not contain Be.

6. The amorphous alloy for appearance parts according to claim 5, characterized in that: The oxygen content of the amorphous alloy is 80-200 PPM, and the amorphous forming ability is 12-20 mm.

7. A method for preparing an amorphous alloy for an appearance part, characterized in that: The following steps are included: Weigh the raw materials according to the composition of the amorphous alloy. The composition of the amorphous alloy is (Zr, Hf, Ti) a (Cu, Ni, Ti) b (Al, Nb) c Re d M e , where a, b, c, d, and e are the atomic percentages of the elements, and the sum of a, b, c, d, and e is 100; Re is one of Y, Pr, La, and Ce, and M is one of Fe, Mn, and Zn; the atomic percentages of the elements are in the range of 52 ≤ a ≤ 62, 25 ≤ b ≤ 35, 12 ≤ c ≤ 20, 0.1 ≤ d ≤ 0.5, and 0.1 ≤ e ≤ 0.2; In the composition of the amorphous alloy, the atomic percentage ratio of Zr, Hf, and Ti in the main alloying elements is (85-90):5:(5-10); the atomic percentage ratio of Cu, Ni, and Ti in the secondary alloying elements is (50-70):(25-35):(5-15); the atomic percentage ratio of Al and Nb in the first auxiliary additive element group is (70-75):(25-30); Wherein Zr, Hf, and Ti are main alloy raw materials, Cu, Ni, and Ti are secondary alloy raw materials, Al and Nb are first auxiliary additive raw materials, Re is second auxiliary additive raw material, and M is third auxiliary additive raw material. After the above raw materials are smelted uniformly according to the proportion, they are added into the vacuum melting furnace in the order of main alloy raw material, secondary alloy raw material, first auxiliary additive raw material, second auxiliary additive raw material, and third auxiliary additive raw material. After all the raw materials are added, they are smelted in the vacuum melting furnace for 2 to 3 times until the melt is uniform. The slag is removed 1 to 3 times in the early, middle, and late stages of the smelting process. After the last slag removal is completed, the melt is poured into the mold and quickly cooled to room temperature in the mold to obtain the desired amorphous alloy raw material.

8. The method for preparing an amorphous alloy for an appearance part according to claim 7, wherein: The mold adopts one or more cooling methods of water cooling, oil cooling, and air cooling, and the cooling rate of the melt in the mold is 40-100°C / s.

9. The method for preparing an amorphous alloy for an appearance part according to claim 7, wherein: The amorphous alloy raw material is formed into a shape of a flat plate, a strip, or a column.

10. The method for preparing an amorphous alloy for an appearance part according to claim 9, characterized in that: The obtained amorphous alloy raw material is crushed into 2-5 cm pieces as raw materials for the amorphous alloy die-casting process.

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