A short process preparation method of TiAl3 / Cu-Ti composite alloy rod

Abstract

The application discloses a short-process preparation method of TiAl3 / Cu-Ti composite alloy rod material, and belongs to the technical field of copper alloy. The preparation method comprises the following steps: preparing Cu-Ti alloy powder and TiAl3 powder; mixing the Cu-Ti alloy powder and the TiAl3 powder under inert protection atmosphere; heating the mixed powder to obtain a semi-solid mixture, extruding the semi-solid mixture, quenching the semi-solid mixture after extrusion, and then further cooling to room temperature to obtain a rod blank; and performing rotary swaging after heating the rod blank, and then performing water quenching to obtain the TiAl3 / Cu-Ti composite alloy rod material. The short-process preparation method of the TiAl3 / Cu-Ti composite alloy rod material directly uses Cu-Ti alloy powder and TiAl3 powder as raw materials, and directly forms through semi-solid forming, so that the problem of uneven distribution of TiAl3 particles is overcome.

Description

Technical Field

[0001] This invention belongs to the field of copper alloy technology, specifically relating to a short-process preparation method for TiAl3 / Cu-Ti composite alloy rods. Background Technology

[0002] Copper alloys have wide applications in industry, with Cu-Be alloys being favored due to their superior strength, elasticity, hardness, corrosion resistance, and non-magnetic properties. However, Cu-Be alloys contain benzene (Be), an element potentially harmful to human health, and their manufacturing process is complex. Furthermore, the limited availability and high cost of Be resources restrict the application range of Cu-Be alloys. Therefore, there is a need to find a more environmentally friendly and low-cost alternative material. Current research indicates that Cu-Ti alloys show promising potential as a replacement for Cu-Be alloys.

[0003] However, the existing Cu-Ti alloy properties still need improvement, especially in terms of thermal stability, and further improvement is needed to meet more demanding engineering requirements. TiAl3 particles, as a reinforcing phase, have the characteristics of high hardness and high melting point. They can be introduced into copper-based alloys to improve their comprehensive properties, including strength, hardness, and thermal stability, to meet the requirements of specific industrial applications. However, the introduction of TiAl3 particles into copper alloys has the following problems: (1) TiAl3 particles are difficult to distribute uniformly in copper alloys. Since TiAl3 particles usually have a higher density than Cu, it is easy to cause uneven distribution of TiAl3 particles in copper alloys during the preparation process, resulting in inconsistent strength, hardness and other properties of the alloy, and reducing the overall performance. (2) The bond between Cu and TiAl3 particles is weak. Cu and TiAl3 particles are basically immiscible, which may lead to a weak bond between TiAl3 particles and Cu matrix. During use, particle shedding or interface failure may occur, thereby reducing the performance of the alloy. (3) TiAl3 particles are prone to phase transformation with Cu. Since both Ti and Al in TiAl3 particles readily form metal compounds with Cu, some reactions occur at the interface between TiAl3 particles and the Cu matrix, forming new phases, which leads to a decrease in the number of TiAl3 particles and a weakening of the bond between TiAl3 particles and the Cu matrix.

[0004] Therefore, developing a Cu-Ti alloy with TiAl3 addition that can overcome the above-mentioned technical problems is of great significance for the engineering application of copper alloys. Summary of the Invention

[0005] Based on this, and to address the shortcomings of the existing technology, a short-process preparation method for TiAl3 / Cu-Ti composite alloy rods is proposed.

[0006] To achieve the above objectives, the following technical solution is adopted:

[0007] This invention provides a short-process method for preparing TiAl3 / Cu-Ti composite alloy rods, comprising the following steps:

[0008] S101, Preparation of Cu-Ti alloy powder and TiAl3 powder;

[0009] S102. Mix Cu-Ti alloy powder and TiAl3 powder under an inert protective atmosphere;

[0010] S103. The mixed powder is heated to obtain a semi-solid mixture, the semi-solid mixture is extruded, the semi-solid mixture is quenched after extrusion, and then further cooled to room temperature to obtain a billet.

[0011] S104. The billet is heated and then rotary forged, and then water quenched to obtain TiAl3 / Cu-Ti composite alloy rod.

[0012] In some embodiments, in step S101, Cu-Ti alloy powder and TiAl3 powder are prepared by aerosol method; the particle size of Cu-Ti alloy powder is 20-40 μm, and the particle size of TiAl3 powder is 5-15 μm.

[0013] In some embodiments, the Cu-Ti alloy powder is an alloy with a Ti content of 3 wt%.

[0014] In some embodiments, in step S102, based on the total mass of the mixed powder, Cu-Ti alloy powder accounts for 90% to 95%, and TiAl3 powder accounts for 5% to 10%.

[0015] In some embodiments, in step S102, the inert protective atmosphere is nitrogen, argon, or helium, and the mixing is performed mechanically.

[0016] In some embodiments, in step S103, the heating temperature of the mixed powder is 950-1050°C, the pressure of the extruded semi-solid mixture is 120-150 MPa, and the holding time is 10-20 min.

[0017] In some embodiments, in step S104, the billet is heated to a temperature of 800-900°C, and the four-die rotary forging machine is used for rotary forging at a rotation speed of 250 r / min.

[0018] In some embodiments, in step S103, a horizontal forward Cu alloy extruder and an inclined feeding trough are used to feed the powder by its own weight. The powder is heated by an induction heater to obtain a semi-solid mixture. At the same time, the valve is closed and the semi-solid mixture is extruded by a piston. Then the valve is opened and the semi-solid mixture is extruded through a die. It is then quenched by water spraying and further cooled to room temperature by a water tank.

[0019] In some embodiments, the water temperature for water spray quenching is 20-40℃, and the quenching time is 5-10s.

[0020] In some embodiments, the billet is a billet with a diameter of φ6-8 mm, and the TiAl3 / Cu-Ti composite alloy rod is a rod with a diameter of φ3-5 mm.

[0021] The present invention has the following beneficial technical effects:

[0022] The short-process preparation method for TiAl3 / Cu-Ti composite alloy rods of the present invention uses Cu-Ti alloy powder and TiAl3 powder as raw materials, and directly overcomes the problem of uneven distribution of TiAl3 particles through semi-solid forming. Semi-solid extrusion forming improves the weak bonding between TiAl3 particles and the Cu matrix. Heating the TiAl3 and Cu-Ti mixed powder to obtain a semi-solid mixture of TiAl3 and Cu-Ti reduces the voids between TiAl3 and Cu-Ti particles, increasing the contact area between the particles and the matrix. By controlling the deformation temperature, phase transformation between TiAl3 particles and Cu is avoided. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flowchart of the short-process preparation method of the TiAl3 / Cu-Ti composite alloy rod of the present invention;

[0025] Figure 2 This is a schematic diagram of the short-process preparation method of the TiAl3 / Cu-Ti composite alloy rod of the present invention;

[0026] Figure 3 The images shown are scanning electron microscope (SEM) images of TiAl3 / Cu-Ti composite alloy rods according to embodiments of the present invention; wherein, (a) is a scanning electron microscope (SEM) image of the TiAl3 / Cu-Ti composite alloy rod of Example 1; and (b) is a scanning electron microscope (SEM) image of the TiAl3 / Cu-Ti composite alloy rod of Example 2. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to specific examples and the accompanying drawings.

[0028] It should be understood that the embodiments of the invention shown in the exemplary embodiments are merely illustrative. Although only a few embodiments have been described in detail in this invention, those skilled in the art will readily recognize that various modifications are possible without substantially departing from the teachings of the invention. Accordingly, all such modifications should be included within the scope of the invention. Other substitutions, modifications, variations, and deletions can be made to the design, operating conditions, and parameters of the following exemplary embodiments without departing from the spirit of the invention.

[0029] This invention addresses the problem of uniform distribution of TiAl3 particles in Cu alloys. Because TiAl3 particles typically have a higher density than Cu, uneven distribution of TiAl3 particles in Cu alloys is easily caused during the preparation process, leading to inconsistent strength, hardness, and other properties of the alloy, thus reducing overall performance.

[0030] This invention addresses the problem of weak bonding between Cu and TiAl3 particles. The near immiscibility of Cu and TiAl3 particles can lead to weak TiAl3 particle-Cu matrix bonding, potentially causing particle detachment or interface failure during use, thus reducing the alloy's performance.

[0031] This invention aims to address the problem of TiAl3 particles easily undergoing phase transitions with Cu. Since both Ti and Al in TiAl3 particles readily form metallic compounds with Cu, reactions occur at the interface between TiAl3 particles and the Cu matrix, forming new phases. This leads to a decrease in the number of TiAl3 particles and a weakening of the bond between TiAl3 particles and the Cu matrix.

[0032] Based on the above objectives, a first aspect of the present invention provides a short-process preparation method for TiAl3 / Cu-Ti composite alloy rods. Figure 1 The diagram shown is a schematic flowchart of the method.

[0033] The short-process preparation method for TiAl3 / Cu-Ti composite alloy rods includes the following steps:

[0034] S101, Preparation of Cu-Ti alloy powder and TiAl3 powder;

[0035] S102. Mix Cu-Ti alloy powder and TiAl3 powder under an inert protective atmosphere;

[0036] S103. The mixed powder is heated to obtain a semi-solid mixture, the semi-solid mixture is extruded, the semi-solid mixture is quenched after extrusion, and then further cooled to room temperature to obtain a billet.

[0037] S104. The billet is heated and then rotary forged, and then water quenched to obtain TiAl3 / Cu-Ti composite alloy rod.

[0038] In a preferred embodiment of the present invention, in step S101, Cu-Ti alloy powder and TiAl3 powder are prepared by aerosol method; the particle size of Cu-Ti alloy powder is 20-40 μm, and the particle size of TiAl3 powder is 5-15 μm.

[0039] In a preferred embodiment of the present invention, the Cu-Ti alloy powder is an alloy with a Ti content of 3 wt%.

[0040] In a preferred embodiment of the present invention, in step S102, based on the total mass of the mixed powder, Cu-Ti alloy powder accounts for 90% to 95% and TiAl3 powder accounts for 5% to 10%.

[0041] In a preferred embodiment of the present invention, in step S102, the inert protective atmosphere is nitrogen, argon or helium, and the mixing is performed mechanically.

[0042] Specifically, mechanical mixing can be performed using paddle mixers, turbine mixers, or electromagnetic mixers, with electromagnetic mixers being preferred. Mechanical mixing ensures uniform dispersion of the powder.

[0043] In a preferred embodiment of the present invention, in step S103, the heating temperature of the mixed powder is 950-1050°C, the pressure of the extruded semi-solid mixture is 120-150 MPa, and the holding time is 10-20 min.

[0044] In some embodiments, in step S103, a horizontal forward Cu alloy extruder and an inclined feeding trough are used to feed the powder by its own weight. The powder is heated by an induction heater to obtain a semi-solid mixture. At the same time, the valve is closed and the semi-solid mixture is extruded by a piston. Then the valve is opened and the semi-solid mixture is extruded through a die. It is then quenched by water spraying and further cooled to room temperature by a water tank.

[0045] like Figure 2The diagram illustrates a short-process preparation method for TiAl3 / Cu-Ti composite alloy bars. Cu-Ti alloy powder and TiAl3 powder are fed into a horizontal forward Cu alloy extruder via an inclined feed trough, essentially using the powder's own weight for feeding. The powder in the extruder is heated by an induction heater to obtain a semi-solid mixture. Simultaneously, the feed valve is closed, and the semi-solid mixture is extruded by a piston. The valve is then opened, and the semi-solid mixture is extruded through a die, quenched by water spray, and the bar is further cooled to room temperature in a water bath. The bar is then heated to 800-900℃ in a tube furnace, forged using a four-die rotary forging machine, followed by water quenching to obtain bars with a diameter of 3-5 mm, which are then finally coiled.

[0046] In semi-solid extrusion molding, the temperature is controlled to avoid the formation temperature range of Cu-Ti and Cu-Al compounds in order to suppress the interfacial reaction between TiAl3 particles and Cu matrix.

[0047] The induction heater has a heating rate of 5-10℃ / s to ensure that the powder is heated uniformly to the semi-solid temperature range.

[0048] The extrusion die has an outlet diameter of 6-8 mm. During the extrusion process, the semi-solid mixture is pushed by a piston to achieve directional forming.

[0049] The tilt angle of the inclined feeding trough is 30°-60°, which utilizes the weight of the powder to achieve continuous feeding and avoids external forces interfering with the uniformity of mixing.

[0050] In a preferred embodiment of the present invention, in step S104, the billet is heated to a temperature of 800-900°C, and the forging is performed by a four-die rotary forging machine at a rotation speed of 250 r / min.

[0051] In the high-temperature rotary forging process, the forging deformation is 30%-50%, and the bar size is precisely controlled by multi-die continuous rotary forging.

[0052] Specifically, the billets can be heated using a tube furnace.

[0053] In a preferred embodiment of the present invention, the water temperature for water spray quenching is 20-40°C and the quenching time is 5-10 seconds to ensure rapid solidification of the semi-solid mixture.

[0054] In some embodiments, the billet is a billet with a diameter of φ6-8 mm, and the TiAl3 / Cu-Ti composite alloy rod is a rod with a diameter of φ3-5 mm.

[0055] "φ" is a special symbol used to represent the diameter of a circular object. For example, "φ6-8mm" indicates a diameter range, meaning the diameter of the billet is between 6 and 8 millimeters.

[0056] This invention uses Cu-Ti powder and TiAl3 powder as raw materials and proposes to prepare Cu-Ti alloy rods containing TiAl3 particles by powder semi-solid extrusion molding. Compared with the existing manufacturing methods, this method has the following advantages:

[0057] Using Cu-Ti nanopowder and TiAl3 nanopowder as raw materials, a semi-solid forming process was employed to overcome the problem of uneven TiAl3 particle distribution. Thorough mixing of Cu-Ti and TiAl3 powders through stirring ensures that TiAl3 is uniformly distributed within the Cu-Ti powder. Simultaneously, the semi-solid forming process avoids the sinking of TiAl3 particles in the molten Cu-Ti due to density differences. This effectively overcomes the problem of uneven TiAl3 particle distribution in Cu-Ti alloys.

[0058] Semi-solid extrusion molding was employed to address the weak bonding between TiAl3 particles and the Cu matrix. By heating a mixture of TiAl3 and Cu-Ti powders to obtain a semi-solid mixture of TiAl3 and Cu-Ti, the voids between TiAl3 and Cu-Ti particles were reduced, increasing the contact area between the particles and the matrix. Simultaneously, the extrusion process subjected the TiAl3 particles to plastic deformation, leading to changes in particle shape and orientation. This improved mechanical locking between the particles and the matrix, thereby enhancing the bonding between the TiAl3 particles and the Cu matrix.

[0059] By controlling the deformation temperature, phase transformation between TiAl3 particles and Cu was avoided. Keeping the temperature outside the range where Cu-Ti and Cu-Al compounds form effectively prevented reactions at the interface between TiAl3 particles and the Cu matrix, thus avoiding the loss of TiAl3 particles and further improving the weak bonding between TiAl3 particles and the Cu matrix.

[0060] By using a semi-solid forming process to prevent TiAl3 particles from sinking due to density differences, and by using extrusion plastic deformation to enhance the mechanical locking between the particles and the matrix, the problems of uneven particle distribution and weak bonding in the existing technology are solved.

[0061] The present invention is further illustrated by the following examples. Tables 1-3 show the properties of the TiAl3 / Cu-Ti composite alloy rods of Examples 1-3.

[0062] Tensile strength is the maximum tensile stress a material can withstand during the tensile process, from the start to the point of fracture, and is measured in MPa (megapascals). When the tensile force on a material reaches its tensile strength, the material begins to exhibit necking and eventually fractures.

[0063] Conductivity (%IACS) is an important indicator of a material's electrical conductivity; a higher value indicates better conductivity. %IACS, or International Standard for Annealed Copper, is a unit characterizing conductivity. This standard uses the conductivity of internationally annealed copper as a reference, defining it as 100% IACS. For other metallic materials, their conductivity can be calculated by comparing them to the conductivity of internationally annealed copper and converting the result to a %IACS value. In practical applications, a high %IACS value signifies better electron transport efficiency and conductivity, which is crucial for applications requiring high-quality, high-conductivity metallic materials. Therefore, when selecting alloy materials, a higher %IACS value is generally preferred.

[0064] Elongation refers to the percentage of total elongation to the original gauge length after tensile fracture, and is used to characterize the plastic deformation capacity of a material.

[0065] The elastic modulus is the ratio of stress to strain in a material during the elastic deformation stage. It measures the amount of stress required to produce a unit strain in a material. The larger the value, the "harder" the material is and the more difficult it is to undergo elastic deformation.

[0066] Example 1

[0067] (1) Powder preparation and mixing

[0068] Cu-Ti alloy powder and TiAl3 powder prepared by aerosol method were used as raw materials. The Cu-Ti powder had a particle size of 20 μm, and the TiAl3 powder had a particle size of 5 μm. The powders were mixed in a ratio of Cu-Ti powder to 5% TiAl3 powder under an inert protective atmosphere.

[0069] (2) Powder semi-solid extrusion molding

[0070] A horizontal forward Cu alloy extruder and an inclined feed trough were used to feed the powder by its own weight. The powder was heated by an induction heater (950°C) to obtain a semi-solid mixture. Simultaneously, the valve was closed, and the semi-solid mixture was extruded by a piston at a pressure of 120 MPa for 10 minutes. Then, the valve was opened, and the semi-solid mixture was extruded through a die. It was then quenched by water spraying and further cooled to room temperature in a water bath to obtain a φ6 mm billet.

[0071] (3) High temperature rotary forging

[0072] The billet in (2) was heated to 800°C in a tube furnace and then forged using a four-die rotary forging machine at a rotation speed of 250 r / min. After water quenching, a TiAl3 / Cu-Ti composite alloy bar with a diameter of φ3 mm was obtained and finally coiled.

[0073] Table 1. Properties of TiAl3 / Cu-Ti composite alloy rods from Example 1

[0074]

[0075] Example 2

[0076] (1) Powder preparation and mixing

[0077] Cu-Ti alloy powder and TiAl3 powder prepared by aerosol method were used as raw materials. The Cu-Ti powder had a particle size of 30 μm, and the TiAl3 powder had a particle size of 10 μm. The powders were mixed in a ratio of Cu-3Ti powder to 7% TiAl3 powder under an inert protective atmosphere.

[0078] (2) Powder semi-solid extrusion molding

[0079] A horizontal forward Cu alloy extruder and an inclined feed trough were used to feed the powder by its own weight. The powder was heated by an induction heater (1000℃) to obtain a semi-solid mixture. Simultaneously, the valve was closed, and the semi-solid mixture was extruded by a piston at a pressure of 130 MPa for 15 minutes. Then, the valve was opened, and the semi-solid mixture was extruded through a die. It was then quenched by water spraying and further cooled to room temperature in a water bath to obtain a φ6mm billet.

[0080] (3) High temperature rotary forging

[0081] The billet in (2) was heated to 850°C in a tube furnace and then forged using a four-die rotary forging machine at a rotation speed of 250 r / min. After water quenching, a TiAl3 / Cu-Ti composite alloy bar with a diameter of φ4 mm was obtained and finally coiled.

[0082] Table 2. Properties of TiAl3 / Cu-Ti composite alloy rods from Example 2

[0083]

[0084] Example 3

[0085] (1) Powder preparation and mixing

[0086] Cu-Ti alloy powder and TiAl3 powder prepared by aerosol method were used as raw materials. The Cu-Ti powder had a particle size of 40 μm, and the TiAl3 powder had a particle size of 15 μm. The powders were mixed in a ratio of Cu-Ti powder to 9% TiAl3 powder under an inert protective atmosphere.

[0087] (2) Powder semi-solid extrusion molding

[0088] A horizontal forward Cu alloy extruder and an inclined feed trough were used to feed the powder by its own weight. The powder was heated by an induction heater (1050℃) to obtain a semi-solid mixture. Simultaneously, the valve was closed, and the semi-solid mixture was extruded by a piston at a pressure of 140 MPa for 20 minutes. Then, the valve was opened, and the semi-solid mixture was extruded through a die. It was then quenched by water spraying and further cooled to room temperature in a water bath to obtain a φ7mm billet.

[0089] (3) High temperature rotary forging

[0090] The billet in (2) was heated to 900°C in a tube furnace and then forged using a four-die rotary forging machine at a rotation speed of 250 r / min. After water quenching, a φ5mm TiAl3 / Cu-Ti composite alloy bar was obtained and finally coiled.

[0091] Table 3. Properties of TiAl3 / Cu-Ti composite alloy rods in Example 3

[0092]

[0093] like Figure 3 The images shown are scanning electron microscope (SEM) images of TiAl3 / Cu-Ti composite alloy rods of Examples 1 and 2 of the present invention; wherein, (a) is a scanning electron microscope (SEM) image of the TiAl3 / Cu-Ti composite alloy rod of Example 1; and (b) is a scanning electron microscope (SEM) image of the TiAl3 / Cu-Ti composite alloy rod of Example 2.

[0094] from Figure 3 As can be seen, the areas with larger, dark-colored particles on the copper matrix are TiAl3. This indicates that TiAl3 is uniformly distributed throughout the TiAl3 / Cu-Ti composite alloy. The short-process preparation method for TiAl3 / Cu-Ti composite alloy rods of this invention overcomes the problem of uneven TiAl3 particle distribution, improves the weak bonding between TiAl3 particles and the Cu matrix, reduces the voids between TiAl3 particles and Cu-Ti particles, and increases the contact area between the particles and the matrix. The TiAl3 edges are clear, preventing phase transformation between TiAl3 particles and Cu.

[0095] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. Although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0096] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A short-process preparation method for TiAl3 / Cu-Ti composite alloy rods, characterized in that, Includes the following steps: S101. Prepare Cu-Ti alloy powder and TiAl3 powder, wherein the Cu-Ti alloy powder is an alloy with a Ti content of 3wt%; S102. Cu-Ti alloy powder and TiAl3 powder are mixed under an inert protective atmosphere, wherein, based on the total mass of the mixed powder, Cu-Ti alloy powder accounts for 90%~95% and TiAl3 powder accounts for 5%~10%; S103. The mixed powder is heated to obtain a semi-solid mixture, the semi-solid mixture is extruded, the semi-solid mixture is quenched after extrusion, and then further cooled to room temperature to obtain a billet. S104. The billet is heated and then rotary forged, and then water quenched to obtain TiAl3 / Cu-Ti composite alloy rod.

2. The short-process preparation method for TiAl3 / Cu-Ti composite alloy rods according to claim 1, characterized in that, In step S101, Cu-Ti alloy powder and TiAl3 powder are prepared by aerosol method; the particle size of Cu-Ti alloy powder is 20-40μm, and the particle size of TiAl3 powder is 5-15μm.

3. The short-process preparation method for TiAl3 / Cu-Ti composite alloy rods according to claim 1, characterized in that, In step S102, the inert protective atmosphere is nitrogen, argon, or helium, and the mixing is performed mechanically.

4. The short-process preparation method for TiAl3 / Cu-Ti composite alloy rods according to claim 1, characterized in that, In step S103, the heating temperature of the mixed powder is 950-1050℃, the pressure of the extruded semi-solid mixture is 120-150 MPa, and the holding time is 10-20 min.

5. The short-process preparation method of TiAl3 / Cu-Ti composite alloy rod according to claim 1, characterized in that, In step S104, the billet is heated to 800-900℃ and then rotated on a four-die rotary forging machine at a speed of 250 r / min.

6. The short-process preparation method for TiAl3 / Cu-Ti composite alloy rods according to claim 4, characterized in that, In step S103, a horizontal forward Cu alloy extruder and an inclined feeding trough are used to feed the powder by its own weight. The powder is heated by an induction heater to obtain a semi-solid mixture. At the same time, the valve is closed and the semi-solid mixture is extruded by a piston. Then the valve is opened and the semi-solid mixture is extruded through a die. It is then quenched by water spraying and further cooled to room temperature by a water tank.

7. The short-process preparation method of TiAl3 / Cu-Ti composite alloy rod according to claim 6, characterized in that, The water temperature for water spray quenching is 20-40℃, and the quenching time is 5-10s.

8. The short-process preparation method of TiAl3 / Cu-Ti composite alloy rod according to claim 1, characterized in that, The billet is φ6-8 mm, and the TiAl3 / Cu-Ti composite alloy bar is φ3-5 mm.

Images