一种Cu-Cr-Nd合金的冷变形及时效特性

俞小青;张萌;郭守晖

航空材料学报 ›› 2007, Vol. 27 ›› Issue (6) : 27-29.

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PDF(467 KB)
航空材料学报 ›› 2007, Vol. 27 ›› Issue (6) : 27-29.
论文

一种Cu-Cr-Nd合金的冷变形及时效特性

  • 俞小青;张萌;郭守晖
作者信息 +

Properties of a Cu-Cr-Nd Alloy Treated by Cold-Deformed and Aged

  • YU Xiaoqing;ZHANG Meng;GUO Shouhui
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文章历史 +

摘要

采用真空感应熔炼技术浇铸Cu-0.8Cr-0.1Nd(wt%)合金。经过固溶处理、变形和时效处理,利用金相显微镜、显微硬度计、电导仪分析其在铸态以及经过各阶段处理后的显微组织、硬度、电导率的变化。结果表明,添加稀土元素Nd能对铜合金基体起到明显的净化作用,而且对晶粒有一定的细化作用。从实验中还可以看到,Cu-0.8Cr-0.1Nd合金随着时效时间的延长,硬度变化都是先增大而后减小,且变形量越大硬度越小。当达到峰值后,变形量越大的合金硬度下降的幅度越大。不同变形量的合金在时效初期电导率迅速上升,随着时效时间的延长电导率处于平缓上升的趋势,且变形量越大的合金电导率也越大。

Abstract

Cu-0.8Cr-0.1Nd(wt%) alloy was cast by median frequency vacuum induction furnace,afterward treated by solid solution,cold-deformed and aging.The microstructure,microhardness and conductivity in each process were investigated by optical microscopy,microhardness tester,and conductivity tester.The results indicate that the adding of Nd can obviously purify the Cu-matrix and refine its grains.With an increase of time of aging,the microhardness of Cu-0.8Cr-0.1Nd alloy first increased,then decreased,however the more cold-deformed of the alloy,the lower hardness was.Conductivity of the alloy after different cold-deformation increased notably,and then went smoothly.But the more the cold-deformed of the alloy,the higher conductivity it was.

关键词

Cu-Cr-Nd合金 / 硬度 / 电导率 / 冷变形 / 时效

Key words

Cu-Cr-Nd alloy / hardness / conductivity / cold deformed / aging

引用本文

导出引用
俞小青;张萌;郭守晖. 一种Cu-Cr-Nd合金的冷变形及时效特性[J]. 航空材料学报, 2007, 27(6): 27-29
YU Xiaoqing;ZHANG Meng;GUO Shouhui. Properties of a Cu-Cr-Nd Alloy Treated by Cold-Deformed and Aged[J]. Journal of Aeronautical Materials, 2007, 27(6): 27-29

参考文献

帅歌旺,张萌.高强高导铜合金及铜基复合材料研究进展[J].特种铸造及有色合金,2005,25(9):534-537.
CHEN Xiao-fang,ZHANG Meng,YIN Jian-ying,et al.Effect of lanthanum and yttrium on microstructures of Cu-Cr alloys[J].材料热处理学报,2004,25(5):56-60.
雷竹芳.热处理工艺对铬铜合金性能及组织的影响[J].材料开发与应用,1999,14(4):12-14.
廖素三,尹志民,蒋牵.热处理对Cu-Cr(-Zr)合金力学性能和导电性能的影响[J].中国有色金属学报,2000,10(5):684-687.
雷静果,刘平,赵冬梅.用导电率研究Cu-Ni-Si-Cr合金时效早期相变动力学[J].材料热处理学报,2003,24(4):22-26.
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