Material design method for elastic copper alloy

A technology of elastic copper alloy and design method, applied in the direction of calculation, special data processing application, instrument, etc., can solve the problems of narrow alloy composition range, difficulty in obtaining experimental data, inability to systematically and accurately find the influence law of added elements, etc. The effect of saving time, easy implementation, saving R&D cost and R&D efficiency

Active Publication Date: 2016-07-20
GRIMAT ENG INST CO LTD
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Problems solved by technology

[0003] At present, researchers at home and abroad have carried out extensive explorations on these alloy systems, but due to the limitations of research methods, there are some problems in the basic theoretical research and product development of new beryllium-free elastic copper alloys: 1. The alloy system studied The scope of the alloy composition involved is narrow, and it is impossible to systematically and accurately find out the influence of the added elements on the microstructure and properties of the alloy; 2. It is difficult to establish reliable data associations for the research results obtained by different research methods, and the research results can guide practical applications Limited; 3. There are many types of elastic copper alloy materials, and it is difficult to obtain systematic and comprehensive experimental data with traditional research methods

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  • Material design method for elastic copper alloy

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Embodiment 1

[0035] The target research system is Cu-Ni-Sn elastic copper alloy. Firstly, the thermodynamic model of the Cu-Ni-Sn ternary system is established, and at 300°C, it is quickly obtained by calculation:

[0036]

[0037] According to the first principle calculation of quantum mechanics, the stable phases of the Cu-Ni-Sn system include: liquid, fcc, bcc, hcp, B2, Cu 3 Sn, Cu 41 sn 11 、Cu 6 sn 5 、Cu 10 sn 3 , D019, Ni 3 sn 2 、Ni 3 sn 4 、Ni 3 Sn. Combined with the calculation results of the phase diagram, the Young's moduli of the four alloys listed in the above table are calculated to be 117GPa, 128GPa, 122GPa and 129GPa at 300°C.

[0038] Melting pure Cu, pure Ni, Cu-20Sn alloy to prepare Cu-Ni-Sn multi-component diffusion couple. With a vacuum of 1.2×10 -3 The vacuum quartz tube of Pa was sealed, heat treated at 300°C for 700 hours, and samples were taken after quenching. Using EPMA, EBSD, and nano-indentation high-resolution test methods to analyze the metal i...

Embodiment 2

[0044] The target research system is Cu-Ti-Sn elastic copper alloy. Firstly, the thermodynamic model of the Cu-Ti-Sn ternary system is established, and at 300°C, 400°C and 500°C, the following calculations are quickly obtained:

[0045]

[0046] Through the first principle calculation of quantum mechanics, the stable phases of the Cu-Ti-Sn system include: liquid, fcc, bcc, hcp, B2, Cu 2 Ti, Cu 3 Sn, Cu 3 Ti 2 、Cu 41 sn 11 、Cu 4 Ti, Cu 4 Ti 3 、Cu 6 sn 5 、Cu 10 sn 3 , D019, CuTi 3 , CuTi, Sn 3 Ti 2 , Sn 5 Ti 6 , SnTi 2 、Cu 2 SnTi, Ti 5 sn 3 Cu, CuSnTi. Combined with the phase diagram calculation results, the Young's moduli of the 12 alloys listed in the above table are calculated as: 125GPa, 147GPa, 146GPa and 179GPa at 300°C; 136GPa, 120GPa, 168GPa and 107GPa at 400°C; 500 Under the condition of ℃, 112GPa, 115GPa, 149GPa and 163GPa

[0047] Melting pure Cu, pure Ti, Cu-30Sn alloy to prepare Cu-Ni-Sn multi-component diffusion couple. With a vacuum of 1...

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Abstract

The invention relates to a material design method for an elastic copper alloy, and belongs to the field of material research method and technology. The method comprises the following steps: establishing a thermodynamic model of a research system by employing a calphad method to carry out phase equilibrium calculation; determining a stable phase and a phase structure of the system by employing the first principles of quantum mechanics, and calculating elastic performance of a specified component in the research system; preparing a test sample by employing a multivariate diffusion couple experimental method, and carrying out a high-resolution material performance scanning test on the test sample to obtain experimental data; carrying out comprehensive analysis and verification on the experimental and computational data, and establishing the association of alloy components, phase composition and the elastic performance of the research system; and designing the copper alloy material of specified elastic performance according to a data result and the association of the data. By adopting the method, the corresponding relation of the elastic performance of the copper alloy with the alloy components and the phase composition can be obtained quickly; and compared with the traditional design method, the purposiveness of the material design method is stronger, expenditure of manpower and material resources is reduced, and the efficiency of scientific research is improved.

Description

technical field [0001] The invention relates to a material design method for elastic copper alloys, which can efficiently and quickly obtain the corresponding relationship between the elastic properties of elastic copper alloys and alloy components and phase composition, and then according to the actual needs for elastic properties, carry out elastic copper alloys The design of materials belongs to the field of materials research methods and technologies. Background technique [0002] Beryllium copper alloy is known as the "King of Colored Elastic Materials". It has excellent properties such as elasticity, strength, electrical conductivity, thermal conductivity, and corrosion resistance. A variety of advanced elastic components, electronic components and complex molds. However, metal beryllium and its compounds are toxic and can cause acute and chronic beryllium poisoning in humans or animals. In the processing, use and recycling of beryllium copper alloy materials, there ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王建伟王立根黄国杰程磊肖伟解浩峰冯雪解国良
Owner GRIMAT ENG INST CO LTD
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