Method for in-situ reinforcement of high-temperature softening resistance of copper-chromium-zirconium alloy
A copper-chromium-zirconium alloy technology, applied in the field of in-situ enhancement of high-temperature softening resistance of copper-chromium-zirconium alloys, can solve the problems of increasing process complexity, time and cost, avoid complexity and cost problems, and enhance high-temperature softening resistance performance effect
Inactive Publication Date: 2017-12-29
临沂市科创材料有限公司
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Problems solved by technology
[0006] All of the above-mentioned preparation processes for copper-chromium-zirconium alloys, especially the methods for optimizing their high-temperature mechanical properties, are all achieved by combining complex processes such as multi-stage processing, multiple solid solution and aging, or adding alloying elements. Increased process complexity, time and cost
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[0029] The present invention will be further described below in conjunction with the accompanying drawings.
[0030] Such as figure 1 As shown, a method for in-situ strengthening of copper-chromium-zirconium alloy high temperature softening resistance, comprising:
[0031] Equal angular extrusion treatment of copper-chromium-zirconium alloy after solid solution will form a large number of dispersed dislocation defects inside the alloy material, and these defects will serve as nucleation points for the precipitation of second phase particles during subsequent cryogenic treatment, which is conducive to The dispersed distribution of the precipitated phase,
[0032] In the subsequent cryogenic treatment, control the nucleation process of the precipitated phase;
[0033] In the subsequent aging treatment, control the growth process of the precipitated phase;
[0034] In this way, the quantity, size and distribution of precipitated phases can be finely regulated.
[0035] The in...
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Abstract
The invention discloses a method for the in-situ reinforcement of the high-temperature softening resistance of a copper-chromium-zirconium alloy. According to the method, the equal-diameter angular extrusion treatment is performed on the copper-chromium-zirconium alloy subjected to the solution treatment, and then a large number of dispersedly-distributed dislocation defects are formed inside the alloy material; as nucleation points precipitated by second-phase particles during the subsequent subzero treatment, such defects are beneficial to the dispersed distribution of precipitation phases; during the subsequent subzero treatment, the nucleation process of the precipitation phases is regulated and controlled; during the subsequent aging treatment, the growth process of the precipitation phases is regulated and controlled; and accordingly, the quantity, the sizes and the distribution of the precipitation phases can be finely regulated and controlled. Compared with the prior art, the method disclosed by the invention has the advantages that through an ingenious design process route, the precipitation behavior and the precipitation state of the precipitation phases can be finely regulated and controlled; the complexity and the cost problem which are caused by repeated solution and aging treatment, the doping of alloy elements, and other processes can be avoided; and the in-situ reinforcement of the high-temperature softening resistance of the copper-chromium-zirconium alloy can be achieved for the first time.
Description
technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a method for in-situ enhancing the high-temperature softening resistance of copper-chromium-zirconium alloys. Background technique [0002] With the development of power devices and the improvement of IC integration, the calorific value of chips per unit space is getting higher and higher. In order to ensure the stability of chips during their service life, the lead frame materials supporting chips must have high electrical conductivity, Thermal conductivity, heat resistance and excellent mechanical properties. It is particularly worth noting the heat resistance of the lead frame material at high temperature. As the operating temperature of the chip rises, the lead frame material needs to have deformation resistance and softening resistance under high temperature conditions. [0003] Copper-chromium-zirconium alloy is a copper alloy material that ...
Claims
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IPC IPC(8): C22F1/08C22C9/00
CPCC22C9/00C22F1/08
Inventor 宋忠孝马凌志陈凯薛佳伟秦利明李雁淮虞海亮
Owner 临沂市科创材料有限公司