Highly elastic aluminum alloy containing titanium compound and method for producing the same

Abstract

Highly elastic aluminum alloy containing a titanium compound, wherein the alloy comprises Ti and B, wherein a composition ratio of Ti and B is in a range of 3.5 to 6:1, wherein B is contained in an amount of 0.5 to 2 weight percent based on the total weight of the highly elastic aluminum alloy, where both an Al 3 Ti phase as well as a TiB 2 -phase as a reinforcement phase, where the Al 3 Ti phase is contained in an amount of 2.8 to 10.06 weight percent, where the TiB 2 -phase is contained in an amount of 3.21 to 3.76 percent by weight, and where the melting point of the alloy is less than 800°C.

Description

Technical area

[0001] The present invention relates to a highly elastic aluminum alloy and a method for producing the highly elastic aluminum alloy. In particular, the highly elastic aluminum alloy comprises a titanium compound containing both titanium trialumide (Al 3 Ti) and titanium diboride (TiB 2 ) phases as reinforcing phases in order to significantly improve the elasticity of the aluminum alloy and to maintain the castability. background

[0002] The present invention relates to a highly elastic aluminum casting material (e.g., aluminum casting material) for improving strength as well as noise, vibration and hardness (NVH) properties.

[0003] In the related art, to increase elasticity of an aluminum alloy, a reinforcing phase made of a metal-based compound such as carbon nanotubes (CNTs) or the like may be formed in a powder form. However, cost-effectiveness cannot be achieved. Furthermore, if the reinforcing phase is used in a powder form during a casting process of an alloy, the wettability with an aluminum (Al) matrix and the dispersion thereof may deteriorate. In particular, when a hypereutectic aluminum casting material is used, only a low-pressure process can be used, and machining of the hypereutectic aluminum casting material may be difficult due to coarse Si particles.

[0004] The optimization of the formation of a titanium-based compound that can greatly contribute to improving elasticity by using both titanium trialumide (Al 3Ti) phase as well as the titanium diboride (TiB 2 ) phase as a reinforcing phase, and implementing a highly elastic material that can be used in a general casting process, including a high-pressure casting process, and that is uniform (e.g., in terms of microstructure), are desirable to maximize elasticity and improve repeatability.

[0005] The above description of the related art has been made only to improve the understanding of the general background of the invention and does not represent the prior art as already known to those skilled in the art.

[0006] For example, from JP 2012- 237 061 A an aluminum alloy is known in which both an Al 3 Ti phase as well as a TiB 2 -phase as a strengthening phase. Another aluminum alloy is known from DE 10 2012 106 022 A1. Description of the invention

[0007] The present invention provides a highly elastic aluminum alloy according to claims 1 and 2, as well as a manufacturing method thereof according to claim 6. Further embodiments of the aluminum alloy and the manufacturing method are described in the respective dependent claims. That is, in particular, the highly elastic aluminum alloy may comprise a titanium compound which contains both the AL 3 Ti phase as well as the TiB 2 -phase as reinforcing phases, thereby increasing elasticity and improving castability by lowering a melting point of the highly elastic aluminum alloy.

[0008] According to one aspect, a highly elastic aluminum alloy (e.g., an aluminum alloy with a high modulus of elasticity) comprising a titanium compound is provided.

[0009] According to an exemplary embodiment, a highly elastic aluminum alloy may comprise Ti and B. In particular, a composition ratio (e.g., weight ratio, alternatively, molar ratio) of titanium (Ti) and boron (B) may be in a range of about 3.5 to about 6:1, wherein B may be included in an amount of about 0.5 to 2 weight percent based on the total weight of the highly elastic aluminum alloy, and wherein both an Al 3 Ti phase as well as a TiB 2 -phase may be included therein as a reinforcing phase. According to the invention, the ratio of titanium to boron may be in a range of about 3.5 to about 6 to 1, and the ratio may be based on the amount in moles (of the respective titanium or boron atoms), the weight and / or the volume of titanium and boron.

[0010] Weight percentages of the alloy components as given herein are based on the total weight of the highly elastic aluminum alloy unless otherwise stated.

[0011] According to an exemplary embodiment, a highly elastic aluminum alloy comprising a titanium compound may comprise: silicon (Si) in an amount of about 5 to 13 weight percent, iron (Fe) in an amount of about 0.0 to 1.3 weight percent, manganese (Mn) in an amount of about 0.0 to 0.5 weight percent, magnesium (Mg) in an amount of about 0.0 to 0.3 weight percent, zinc (Zn) in an amount of about 0.0 to 1.0 weight percent, nickel (Ni) in an amount of about 0.0 to 0.5 weight percent, tin (Sn) in an amount of about 0.0 to 0.3 weight percent, copper (Cu) in an amount of about 1.5 to 3.5 weight percent, boron (B) in an amount of about 0.5 to 2 weight percent, wherein titanium (Ti) is contained such that a composition ratio of Ti and B (e.g. Ti to B) is in a range of about 3.5 to about 6 to 1, and the remainder aluminum, based on the total weight of the highly elastic aluminum alloy. In particular, both an Al 3Ti phase as well as a TiB 2 -Phase (e.g. simultaneously) be included in the highly elastic aluminum alloy as a reinforcement phase.

[0012] According to an exemplary embodiment, the highly elastic aluminum alloy may consist essentially of, or consist of, or consist essentially of the composition described above.According to an exemplary embodiment, the highly elastic aluminum alloy may consist essentially of, consist of, or consist essentially of: silicon (Si) in an amount of about 5 to 13 weight percent, iron (Fe) in an amount of about 0.0 to 1.3 weight percent, manganese (Mn) in an amount of about 0.0 to 0.5 weight percent, magnesium (Mg) in an amount of about 0.0 to 0.3 weight percent, zinc (Zn) in an amount of about 0.0 to 1.0 weight percent, nickel (Ni) in an amount of about 0.0 to 0.5 weight percent, tin (Sn) in an amount of about 0.0 to 0.3 weight percent, copper (Cu) in an amount of about 1.5 to 3.5 weight percent, boron (B) in an amount of about 0.5 to 2 weight percent, wherein titanium (Ti) is included such that a Composition (molar) ratio of Ti and B is in a range of about 3.5 to about 6:1 (e.g.the molar ratio of Ti to B is (about) 3.5 to (about) 6 to 1), and the remainder is aluminum, the above weight percentages being based on the total weight of the highly elastic aluminum alloy.

[0013] According to another aspect, a method for producing a highly elastic aluminum alloy having a titanium compound is provided.

[0014] According to an exemplary embodiment, the method comprises the steps of: a charging step of charging a melting furnace with Al and / or an Al-B master alloy (or mother alloy) and / or an Al-Ti master alloy (or mother alloy) and / or a Ti raw material, such that a composition ratio of Ti to B may be in a range of about 3.5 to about 6:1 and B may be contained in an amount of about 0.5 to (e.g., about) 2 weight percent (e.g., based on the total weight of the highly elastic aluminum alloy), a primary stirring step (e.g., mixing step) of stirring (e.g., mixing) molten metals (e.g., a metal melt) such that both the Al 3 Ti phase as well as the TiB 2-phase can be formed as a reinforcing phase to promote or stimulate a reaction (e.g. as reaction nuclei), an addition step of adding (e.g. charging the melting furnace with) additional elements, and a secondary stirring step of stirring the molten metals (e.g. the metal melt) so that the reinforcing phase formed can be evenly distributed / dispersed in the molten metals (e.g. the metal melt).

[0015] In exemplary embodiments, the Al-B master alloy may optionally consist of B in an amount of about 3 to 8 weight percent and Al as the balance.

[0016] In exemplary embodiments, the Al-Ti master alloy may optionally consist of Ti in an amount of about 5 to 10 weight percent and Al as the balance.

[0017] In exemplary embodiments, antimony (Sb) may be included in an amount of about 0.3 weight percent or less but more than 0 weight percent (e.g., based on the total weight of the highly elastic aluminum alloy).

[0018] Furthermore, vehicles (e.g., passenger cars) and vehicle parts comprising one or more of the alloys described herein are provided. In particular, the vehicle parts may comprise the highly elastic aluminum alloy as described herein.

[0019] Further aspects are described below. Short description of the characters

[0020] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. The Fig.1 shows a microscopic view of an exemplary aluminum alloy according to an exemplary embodiment of the present invention, in which the Al 3 Ti and TiB 2 -phases are included simultaneously. The Fig. 2 shows a microscopic view of an exemplary aluminum alloy according to an exemplary embodiment of the present invention, wherein no Sb is added to the aluminum alloy. The Fig. Figure 3 shows a microscopic view of an exemplary aluminum alloy according to an exemplary embodiment of the present invention, wherein Sb is added to the aluminum alloy. Description of the exemplary embodiments

[0021] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting of the invention. The singular form "a," "an," "the," etc., is intended to include the plural form, unless the context clearly indicates otherwise. Furthermore, when used herein, the terms "comprising" and "having" mean the presence of the specified features, integers, steps, acts, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, acts, elements, components, and / or groups thereof. The term "and / or" includes any and all combinations of one or more of the related listed items.

[0022] Unless specifically stated or obvious from the context, the term "about" herein means within a range of normal deviation in the art, for example, within two standard deviations from the mean (e.g., arithmetic mean). "About" may be understood as within the range of (plus and / or minus) 10%, 9%, 8%, 7%, 6%, 5%, 4%, 3%, 2%, 1%, 0.5%, 0.1%, 0.05%, or 0.01% of the stated value. Unless otherwise indicated by the context, all numerical values ​​stated herein should be understood as modified by the term "about."

[0023] The terms "vehicle" or "vehicle-" or similar terms, as used herein, include motor vehicles in general, such as passenger vehicles, including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, watercraft, including various boats and ships, aircraft, and the like, as well as hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and vehicles powered by other alternative fuels (for example, fuels derived from a feedstock other than petroleum). Herein, a hybrid vehicle is a vehicle that has two or more power sources, for example, vehicles that are both fuel-powered and electric.

[0024] “Weight percent” is sometimes abbreviated herein as wt%.

[0025] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0026] The present invention provides a highly elastic aluminum alloy which has both the Al 3 Ti and TiB 2 -Phase (e.g. simultaneously) as reinforcing phases in order to improve or increase the elasticity (e.g. the E-modulus (elastic modulus / Young's modulus)), to improve the castability or castability by lowering a melting point of the alloy, and to prevent or suppress an inclusion and a gas defect (e.g. shrinkage cavity formation, e.g. gas inclusions).

[0027] In an exemplary embodiment, the highly elastic aluminum alloy may include a titanium compound. Specifically, the highly elastic aluminum alloy may include boron (B) in an amount of about 0.5 wt. % to 2 wt. % boron and simultaneously include both the Al3Ti phase and the TiB2 phase as the reinforcing phases. The ratio or composition ratio of Ti to B may range from about 3.5 to about 6 to 1 (i.e., about 3.5 to about 6 parts by weight and / or moles of titanium (Ti) to one part by weight or one mole of boron (B)).

[0028] In an exemplary embodiment, the highly elastic aluminum alloy may contain Si in an amount of about 5 to 13 weight percent to improve castability and elasticity or strength. Furthermore, the B content may be about 0.5 to 2 weight percent, and the composition ratio of Ti and B may be from about 3.5 to about 6:1 to maximize the formation of a titanium compound. Of the titanium compound(s), TiB 2 , which has a tensile strength of about 570 GPa, and Al 3 Ti, which has a tensile strength of about 220 GPa, can be the most effective components to improve elasticity, thus forming an alloy-based system.

[0029] Silicon (Si), as used herein, can be a major element of an aluminum alloy for casting. Silicon can improve fluidity and casting quality and contribute to elasticity. When Si is included in an amount of about 13 weight percent or more, primary Si may crystallize, so that the microstructure may become uneven and porosity may be adversely affected. Furthermore, when a substantial amount of Si, greater than a predetermined amount, is added, to solve these problems, it may be necessary to use a continuous casting process (e.g., continuous casting) and a post-process (e.g., subsequent forming process) instead of a general casting process. Accordingly, the Si content may be about 5 to 13 weight percent to provide an aluminum alloy that can be used with general casting processes, such as (high-)pressure casting, gravity casting (e.g.,gravity die casting), low-pressure casting process and the like.

[0030] When Ti and B are contained in aluminum alloys, the TiB 2 - and AL 3 Ti reinforcement phases are formed, which mainly contribute to the elasticity and strength, respectively. Titanium and boron, as used herein, can be the main elements for providing the elasticity of the present invention. When the composition ratio of titanium and boron is about 3.5:1 or less, only TiB 2 be formed without the AL 3Ti phase is formed, so the elasticity may not be sufficiently improved. Furthermore, when the composition ratio of titanium and boron is about 6:1 or more, the melting point may be elevated to about 800 °C or more, so that a large amount of oxide inclusions may be generated in a molten metal when the alloy is used in a casting process, and a gas concentration in the molten metal may increase, thereby having adverse effects on the microstructure quality of a cast product.

[0031] In some embodiments, the boron (B) content may be at least about 0.5 weight percent or more to provide sufficient TiB 2Furthermore, the content can be limited to about 2 weight percent in order to control the rise in melting temperature, suppress or avoid inclusions, control the components and costs of a material, etc. In particular, the content of titanium (Ti) can be determined based on the composition ratio of titanium and boron, which can be from about 3.5 to about 6 to 1, in order to simultaneously control the AL 3 Ti and TiB 2 -phases to form.

[0032] In exemplary embodiments, antimony (Sb) may be included in the highly elastic aluminum alloy. As used herein, antimony (Sb) can improve a size and shape of Si (e.g., precipitates) that affect the elongation of a material, but cannot react with boron, which is one of the main components of the alloy in the present invention. Furthermore, a microstructure control effect can be obtained compared to the case where strontium (Sr) or the like is used as a modifier known in the related art. In embodiments, the content of antimony (Sb) may be up to about 0.3 wt. %.

[0033] With respect to numerous exemplary embodiments of the present invention, the compositions of ADC12, AC4CH, and AC2B demonstrate a number of possibilities for the alloy composition of the present invention. For example, the contents of other elements, such as Si, Cu, Mg, and the like, may be included in amounts equivalent to those of ADC12, and the remainder may be aluminum (Al). Accordingly, the compositions are used for (high) pressure casting and gravity / low pressure casting. The boron (B) content may be about 0.5 to 2 weight percent, and the composition ratio of titanium and (e.g., to) boron may be in (e.g., within) a range of about 3.5 to about 6 to 1, thereby providing the highly elastic aluminum alloy. Furthermore, the Al 3 Ti phase and the TiB 2 -Phase by means of the composition described above as the reinforcement phase.

[0034] Table 1 shows examples of alloy compositions in a conventional alloy according to the related art and in highly elastic aluminum alloys according to exemplary embodiments of the present invention. [Table 1] Si (wt%) Fe (wt%) Cu (wt%) Mn z(Ge w%) Mg (wt%) Ni (wt%) Zn (Ge w%) Ti (wt%) B (wt%) Al (wt%) Conventional alloy according to the related technology ADC 12 (high-pressure casting) 12 1.3 2.5 0.5 0.3 0.5 1 0.3 or less - rest AC4CH (gravity / low pressure casting) 7 0.2 0.2 0.1 0.35 0.05 0.1 0.2 or less - rest Present invention Main element 5~13 - - - - - - 4~6 1~ 2 rest ADC12 application example 12 1.3 2.5 0.5 0.3 0.5 1 4~6 1~ 2 rest AC4CH application example 7 0.2 0.2 0.1 0.35 0.05 0.1 4~6 1~ 2 rest

[0035] In Table 2, results of an experiment using Al as a base material and adding Si, Ti, and B are shown to confirm an effect of Ti and B on the aluminum alloy according to the present invention. [Table 2] Al (wt%) Si (wt%) TiB 2 (In% ) AlB 2 (wt%) Al 3 Ti (Gew %) Elastic modulus (GPa) Melting point (°C) Detailed features Reinforcement phase elastic modulus 66.3 161 570 234 220 - - Density (g / cm 3 ) 2.7 2.33 4.49 3.16 3.3 - - Ti and B free Al-12Si 88.05 11.95 74 581 Ti / B=1 Al-12Si-1B-1Ti 84.87 11.41 1.68 2.04 - 77 578 Ti / B=2.3 Al-12Si-1B-2.3Ti 84.7 11.48 3.74 - - 79 579 Ti / B=3.5 Al-12Si-1B-3.5Ti 81.9 11.54 3.76 - 2.8 80 650 Ti / B=5 Al-12Si-1B-5Ti 77.46 11.95 3.21 - 7.37 83 735 Ti / B=6 Al-12Si-1B-6Ti 74.77 11.96 3.21 - 10.06 85 780 Ti / B=7 Al-12Si-1B-7Ti 72.07 11.96 3.21 - 12.76 87 800 Ti / B=8 Al-12Si-1B-8Ti 69.37 11.96 3.21 - 15.46 89 842 Ti / B=9 Al-12Si-1B-9Ti 66.68 11.96 3.21 - 18.15 91 865

[0036] As shown in Table 2, the elasticity of the alloy can be significantly reduced when Ti and B are not included.

[0037] Furthermore, the AL 3Ti phase can be formed when the composition ratio of titanium (Ti) and boron (B) is about 3.5:1 or greater. When the composition ratio of titanium and boron is about 7:1 or greater, the melting point of the alloy can be about 800 °C or more. It can therefore be seen from the results described above that when the composition ratio of titanium and boron is from about 3.5 to about 6:1 (about 3.5 to about 6 to 1), the AL 3Ti phase can be obtained, which can improve elasticity, and at the same time, the melting point can be kept below about 800°C. Accordingly, castability can be improved, and inclusions and gas defects can be suppressed. If the melting point is raised to about 800°C or higher, the fluidity of the molten metal may deteriorate, and gas and oxides may be contained in a product due to the high temperature, thereby adversely affecting the products and causing a defect in the product. Therefore, for a general casting condition, the melting point can be controlled to be less than about 800°C.

[0038] The Fig. Figure 1 shows a microscopic view of an exemplary Al-12Si-1B-5Ti alloy according to an exemplary embodiment of the present invention. The aluminum alloy can simultaneously contain the Al 3 Ti phase and the TiB2 -phase.

[0039] Table 3 shows test results obtained by comparing the elastic moduli and melting points of a conventional ADC12 alloy and an exemplary embodiment of the present invention with changed composition ratios of Ti and B.

[0040] The conventional ADC12 alloy contains Ti in an amount of about 0.3 wt% or less, and no B (boron) is added. In the examples of Table 3, according to an exemplary embodiment of the invention, a composition ratio of Ti and B is changed in a composition of the conventional ADC12 alloy as described above, while maintaining the Si content of the conventional ADC12 alloy. For example, "ADC12-1B-5Ti" indicates that the aluminum alloy in the examples of the present invention is obtained by adjusting the composition so that B is contained in an amount of about 1 wt%, Ti is contained in an amount of about 5 wt%, other additive elements are the same as those of the conventional ADC12 alloy, and the remainder is Al.

[0041] According to another aspect, a method for producing an aluminum alloy is provided.

[0042] In an exemplary embodiment, the method may comprise the steps of: a charging step (e.g., introducing step) of charging a melting furnace with aluminum, an Al-B master alloy, an AL-Ti master alloy, and / or Ti raw material, a primary stirring step of stirring the molten metals so that both the AL 3 Ti phase as well as the TiB 2 -phase as a reinforcing phase, an addition step of adding (or charging the melting furnace) the remaining additive elements except Ti and B, and a secondary stirring step of stirring the molten metals so that the formed reinforcing phase is evenly distributed in the molten metals (e.g., the metal melt).

[0043] In exemplary embodiments, the Al-B master alloy may consist of boron in an amount of about 3 to 8 weight percent, with aluminum as the balance. Further, the Al-Ti master alloy may consist of titanium in an amount of about 5 to 10 weight percent, with aluminum as the balance. In further embodiments, a titanium raw material containing 100 weight percent titanium and / or a high concentration titanium raw material having a titanium content of about 75 to 95 weight percent titanium, to which a sodium-free flux and the like may be added as a reaction activator, may be used as the titanium (Ti) raw material, but the invention is not limited thereto. In further exemplary embodiments, a titanium raw material having a titanium content of about 75 weight percent is used.

[0044] Antimony (Sb) can be present in a concentration of approximately 0.3 weight percent or less, but more than 0 weight percent. However, it can optionally contain no antimony at all, apart from, for example, natural impurities.

[0045] As it is in the Fig. 3, in an exemplary highly elastic aluminum alloy according to an exemplary embodiment of the present invention, eutectic Si particles may be miniaturized / reduced or modified due to the addition of about 0.3 wt.% antimony (Sb). Furthermore, elongation (e.g., ductility) may be improved without deterioration of physical properties by the miniaturization of the eutectic Si particles. Fig. Figure 2 shows an exemplary highly elastic aluminum alloy that does not contain antimony (Sb), and the Fig.Figure 3 shows an exemplary highly elastic aluminum alloy containing antimony (Sb). Accordingly, antimony, which does not react with boron, can be used as a modifier to improve the elongation (e.g., stretchability) of the highly elastic alloy. In exemplary embodiments, an effective amount of antimony (Sb) without causing deterioration in physical properties due to excessive use can be about 0.3 weight percent.

[0046] When stirring during the process, the specification or design of the stirrer or stirring device can be of great importance. In general, the stirring force is proportional to N 3 d 2 , where N is the number of revolutions per minute and d is a diameter of a stirring bar.

[0047] According to exemplary embodiments, the number of blades or arms of the stirring rod can be between 8 and 4, for example, can be changed / decreased from 8 to 4, and a length thereof can be increased or lengthened to maximize turbulence. In particular, the stirring rod can be at least about 40% of a diameter of the melting furnace, and a diameter of the stirring rod can also be increased from about 18 cm to about 24 cm (e.g., from about 18 cm to about 24 cm) so that dispersion can be maximized. In further exemplary embodiments, a stirring rate or stirring rotation rate can be about 500 revolutions / min or more. Since the diameter and stirring rate / number of revolutions of the stirring rod influence the promotion of the reaction and the distribution of the formed reinforcing particles, the diameter can be about 40% or more of the diameter of the melting furnace.If the stirring rate is 500 rpm or less, the fluidity of the product may be deteriorated due to remaining coarse Al. 3 Ti, elasticity may be reduced due to a deficiency in the amount of TiB formed 2 , and deviation may occur depending on the zones of molten metal and the like.

[0048] In various exemplary embodiments of the present invention, properties such as elasticity, strength, abrasion resistance, processability and the like of the aluminum alloy can be improved by controlling the composition ratio to optimize the titanium compound so that the formation of the titanium compound can be maximized to form a micro-TiB 2 -phase can be evenly distributed, and that the AL 3Ti phase may be formed simultaneously. Furthermore, the aluminum alloys of the present invention can have a temperature range that can be used in an actual casting process, so that the reinforcing phase added in the form of a master alloy (which may contain, for example, Al and / or Ti) can be formed by an in-situ reaction due to the promotion of the reaction by stirring at the time of dissolution. Therefore, any type of generally used casting process can be used with the aluminum alloy of the present invention.

[0049] The present invention can also provide a vehicle part (for example, a car part) comprising the highly elastic aluminum alloy of the present invention.

[0050] According to various embodiments of the present invention, the highly elastic aluminum alloy may contain a titanium compound having the structure described above, and the AL 3 Ti phase and TiB 2 -phase can be included simultaneously as the reinforcing phase. Thus, elasticity can be improved while maintaining the melting point of the alloy according to the invention, suppressing inclusions / cavities and improving castability.

[0051] Although exemplary embodiments of the present invention have been shown and described, those skilled in the art may make modifications and variations of the embodiments without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

[1] Highly elastic aluminum alloy containing a titanium compound, wherein the alloy comprises Ti and B, wherein a composition ratio of Ti and B is in a range of 3.5 to 6:1, wherein B is contained in an amount of 0.5 to 2 weight percent based on the total weight of the highly elastic aluminum alloy, where both an Al 3 Ti phase as well as a TiB 2 -phase as a reinforcement phase, where the Al 3 Ti phase is contained in an amount of 2.8 to 10.06 weight percent, where the TiB 2 -phase is contained in an amount of 3.21 to 3.76 percent by weight, and where the melting point of the alloy is less than 800°C. [2] Highly elastic aluminum alloy comprising a titanium compound, the alloy comprising, based on the total weight of the high-elastic aluminum alloy: Silicon in an amount of 5 to 13 percent by weight, Iron in an amount of 0.0 to 1.3 percent by weight, Manganese in an amount of 0.0 to 0.5 percent by weight, Magnesium in an amount of 0.0 to 0.3 percent by weight, Zinc in an amount of 0.0 to 1.0 percent by weight, Nickel in an amount of 0.0 to 0.5 percent by weight, Tin in an amount of 0.0 to 0.3 percent by weight, Copper in an amount of 1.5 to 3.5 percent by weight, Boron (B) in an amount of 0.5 to 2 percent by weight, and aluminum as residue, wherein titanium (Ti) is contained in such a way that a composition ratio of Ti and B is in a range of 3.5 to 6:1, which includes both an Al 3 Ti phase as well as a TiB 2 -phase as a reinforcement phase, where the Al 3Ti phase is contained in an amount of 2.91 to 10.08 weight percent, where the TiB 2 -phase is contained in an amount of 3.21 to 3.9 percent by weight, and where the melting point of the alloy is less than 800°C. [3] Highly elastic aluminum alloy according to claim 1 or 2, which, based on the total weight of the highly elastic aluminum alloy, consists essentially of Silicon in an amount of 5 to 13 percent by weight, Iron in an amount of 0.0 to 1.3 percent by weight, Manganese in an amount of 0.0 to 0.5 percent by weight, Magnesium in an amount of 0.0 to 0.3 percent by weight, Zinc in an amount of 0.0 to 1.0 percent by weight, Nickel in an amount of 0.0 to 0.5 percent by weight, Tin in an amount of 0.0 to 0.3 percent by weight, Copper in an amount of 1.5 to 3.5 percent by weight, Boron (B) in an amount of 0.5 to 2 percent by weight, wherein titanium (Ti) is contained such that a composition ratio of Ti and B is in a range of 3.5 to 6: 1, and aluminum as the remainder. [4] A highly elastic aluminum alloy according to claim 1 or 2, wherein antimony (Sb) is contained in an amount of 0.3 wt% or less but more than 0 wt%. [5] Highly elastic aluminum alloy according to any one of claims 1 to 4, which, based on the total weight of the high-elastic aluminum alloy, consists essentially of Silicon in an amount of 5 to 13 percent by weight, Iron in an amount of 0.0 to 1.3 percent by weight, Manganese in an amount of 0.0 to 0.5 percent by weight, Magnesium in an amount of 0.0 to 0.3 percent by weight, Zinc in an amount of 0.0 to 1.0 percent by weight, Nickel in an amount of 0.0 to 0.5 percent by weight, Tin in an amount of 0.0 to 0.3 percent by weight, Copper in an amount of 1.5 to 3.5 percent by weight, Boron (B) in an amount of 0.5 to 2 percent by weight, wherein titanium (Ti) is contained such that a composition ratio of Ti and B is in a range of about 3.5 to about 6:1, Antimony (Sb) in an amount of 0.3% by weight or less but more than 0% by weight, and aluminum as the remainder. [6] A method for producing a highly elastic aluminum alloy according to any one of claims 1 to 5, comprising a titanium compound, comprising the steps of: a charging step of charging a melting furnace with Al, an Al-B master alloy, an Al-Ti master alloy, and / or a Ti raw material, wherein a composition ratio of Ti and B is in a range of 3.5 to 6:1, and wherein B is contained in an amount of 0.5 to 2 weight percent based on the total weight of the highly elastic aluminum alloy, a primary stirring step of stirring molten metals so that both the Al 3 Ti phase as well as the TiB 2 -phase as a reinforcement phase to promote a reaction, an addition step of adding additional elements, and a secondary stirring step of stirring the molten metals so that the formed reinforcement phase is evenly distributed in the molten metals. [7] A process according to claim 6, wherein the Al-B master alloy consists of B in an amount of 3 to 8 weight percent B and Al as the remainder. [8] A method according to claim 6 or 7, wherein the Al-Ti master alloy consists of Ti in an amount of 5 to 10 wt% and Al as the balance. [9] The method according to any one of claims 6 to 8, wherein Sb is contained in an amount of 0.3 wt% or less but more than 0 wt% based on the total weight of the highly elastic aluminum alloy. [10] A motor vehicle part comprising the highly elastic aluminum alloy according to any one of claims 1 to 5.

Images