时效对Cu-Ni-Si-Cr合金微观组织和性能的影响

范莉; 刘平; 于志生; 张毅; 贾淑果

doi:10.15980/j.tzzz.2015.08.005

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时效对Cu-Ni-Si-Cr合金微观组织和性能的影响
Effect of Aging Treatment on Microstructure and Properties of Cu-Ni-Si-Cr Alloy
2015年35卷第8期页码：799-801
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.08.005

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[1]范莉,刘平,于志生,张毅,贾淑果.时效对Cu-Ni-Si-Cr合金微观组织和性能的影响[J].特种铸造及有色合金,2015,35(08):799-801.

Fan Li, Liu Ping, Yu Zhisheng, et al. Effect of Aging Treatment on Microstructure and Properties of Cu-Ni-Si-Cr Alloy[J]. Special Casting & Nonferrous Alloys, 2015,35(8):799-801.
[1]范莉,刘平,于志生,张毅,贾淑果.时效对Cu-Ni-Si-Cr合金微观组织和性能的影响[J].特种铸造及有色合金,2015,35(08):799-801. DOI： 10.15980/j.tzzz.2015.08.005.

Fan Li, Liu Ping, Yu Zhisheng, et al. Effect of Aging Treatment on Microstructure and Properties of Cu-Ni-Si-Cr Alloy[J]. Special Casting & Nonferrous Alloys, 2015,35(8):799-801. DOI： 10.15980/j.tzzz.2015.08.005.

摘要

研究了时效及冷变形后时效对Cu-Ni-Si-Cr合金微观组织和性能的影响。结果表明

固溶处理后

合金在500℃时效4h可以获得良好的综合性能

电导率和硬度（HV）分别达到22.34MS/m和220.1。变形量为80%的Cu-Ni-Si-Cr合金在450℃时效2h获得良好的综合性能

电导率和硬度（HV）分别为22.50 MS/m和267.5。对Cu-Ni-Si-Cr合金时效试样进行显微分析

其析出相呈细小弥散分布

经选区电子衍射分析发现析出相为Ni2Si

同时发现Cr单质存在。

Abstract

Effects of aging temperature

aging time and different cold deformation on microstructure and properties of Cu-Ni-Si-Cr alloy were investigated.The results show that after solution treatment

the electrical conductivity and microhardness of the alloy aged at 500℃for 4hreach 22.34MS/m and 220.1HV

respectively

exhibiting favorable comprehensive properties.The desirable properties can be obtained with electrical conductivity of 22.50 MS/m and microhardness of 267.5 HV after 80%cold deformation by aging at 450 ℃for 2h.The fine and dispersedly precipitates can be observed in Cu-Ni-SiCr alloys

which are revealed as Ni2 Si and Cr elemental by electron diffraction analysis.