A kind of preparation method of predetermined elastic modulus al-ti-zr alloy material
A technology of al-ti-zr and alloy materials, applied in the field of material research, can solve the problems of difficult preparation of alloy materials, waste of manpower and material resources, etc.
Active Publication Date: 2020-05-08
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Problems solved by technology
[0005] In the prior art, the Al-Ti-Zr alloy with predetermined elasticity is often prepared by blindly setting parameters, which is not only difficult to prepare the required alloy material, but also wastes a lot of manpower and material resources. In order to solve this problem, this The invention provides a new material design method for Al-Ti-Zr alloys with predetermined elasticity, which can precisely control the alloy composition of Al-Ti-Zr alloys to obtain Al-Ti-Zr alloys with target elastic properties
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[0065] (1) Collect relevant experimental literature, determine the lattice model and thermodynamic model of different phases in the Al-Ti-Zr ternary system, calculate the Calphad phase diagram of the Al-Ti-Zr alloy system, and establish the Al-Ti-Zr alloy The thermodynamic database of the system, the specific thermodynamic database parameters are shown in the following table:
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[0071] According to the optimized database of Al-Ti-Zr system, the exact phase diagram of the system and the relationship between alloy composition, synthesis temperature and phase structure can be obtained through pandat software. The isothermal section of the Al-rich angle phase diagram at 1000℃ and the phase fraction diagram at 1000℃ were calculated.
[0072] figure 2 The isothermal cross-section diagram of the Al-rich end of the Al-Ti-Zr system calculated for the Calphad phase diagram at 1000 °C, given by figure 2 The phase zones of dif...
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Abstract
The invention discloses a preparation method of an Al-Ti-Zr alloy material having predetermined elasticity, and belongs to the field of material research methods and techniques. According to the preparation method disclosed by the invention, Calphad, first principle calculation and vacuum arc melting experiment are comprehensively utilized; a large database of atom configuration-alloy component-synthesis temperature-phase structure-elastic modulus of an Al-Ti-Zr system is established, the alloy component, the synthesis temperature and phase composition information of the Al-Ti-Zr alloy havingtarget elasticity can be quickly obtained, and the preparation method is directly used for guiding preparation of the Al-Ti-Zr alloy having the predetermined elasticity. Compared with a conventional material design method, the pertinence and the purposefulness of the method disclosed by the invention are higher; after the large database of the Al-Ti-Zr alloy is established, the database can be repeatedly utilized to guide the preparation of the Al-Ti-Zr alloy of different target elasticity, so that the human resource cost and material resource cost are greatly saved.
Description
technical field [0001] The invention belongs to the field of material research methods and technologies, and in particular relates to a preparation method of an Al-Ti-Zr alloy material with a predetermined elastic modulus. Background technique [0002] Al-Ti alloy has low density, good heat resistance, high specific strength, specific stiffness, high temperature creep resistance and oxidation resistance, so it has become the material of choice for hypersonic aircraft and the next generation of advanced aero-engines. The biggest obstacle affecting the application of Al-Ti alloys is the lack of sufficient ductility at room temperature. In order to overcome the above shortcomings, many scholars have studied the addition of a third alloying element to Al-Ti alloys. Adding alloying elements is a common and most effective method to change the structure and properties of the alloy. Among them, the addition of Zr element can improve the Al-Ti alloy. The addition of Zr also improves...
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IPC IPC(8): C22C21/00C22C1/02C22F1/04G16C20/10
CPCC22C1/026C22C21/003C22F1/002C22F1/04
Inventor 常可可邓子旋黄峰陈雷雷李朋
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI