Composition of electrical and mechanical functions by controlling of nano-ltructure in Cu-Cr-Ag-Zr system alloys

Cu-Cr-Ag-Zr系合金纳米结构控制的电学和机械性能的组成

基本信息

批准号：
17560614
负责人：
MONZEN Ryoichi
金额：
$ 2.43万
依托单位：
Kanazawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560614/
关键词：
High conductivity alloy Cu-Cr-Ag-Zr alloy Nano-structure control ECAP Thermal stability Zr addition Ag addition Cu-Ni-Si alloy

项目摘要

The microstructure and mechanical properties of thermo-mechanically treated Cu-0.5mass%Cr alloys with and without Zr and Ag have been investigated. The addition of 0.15%Zr causes an increase in the strength and the resistance to stress relaxation of the alloy. The increase of strength or stress relaxation resistance is caused by the decrease in inter-precipitate spacing of Cr precipitates and the precipitation of Cu_5Zr phase or by the preferential formation of Cu_5Zr precipitates on dislocations in addition to Cr precipitates on dislocations. The addition of 0.1%Ag improves the strength, the bend formability and the resistance to stress relaxation. The increase in strength or stress relaxation resistance is attributable to the decrease in inter-precipitate, spacing of Cr precipitates and the suppression of recovery during aging or to the Ag-atom-drag effect on dislocation motion. The improvement of bend formability can be explained in terms of the increase in post-uniform elongation. The effect of equal-channel angular pressing (ECAP) and subsequent heat treatment on the mechanical properties of the Cu-Cr-Zr-Ag alloy has also been studied. The heat-treated ECAP alloy shows larger values of 0.2% proof stress, tensile stress and elongation to failure, but lower bend formability and stress relaxation resistance than the thermo-mechanically treated Cu-CrZr-Ag alloy.

研究了含和不含 Zr 和 Ag 的热机械处理 Cu-0.5mass%Cr 合金的显微组织和机械性能。添加0.15%Zr可提高合金的强度和抗应力松弛能力。强度或抗应力松弛特性的增加是由于Cr析出物间距的减小和Cu_5Zr相的析出造成的，或者是由于位错上除了Cr析出物之外优先形成位错上Cu_5Zr析出物造成的。添加0.1%Ag可提高强度、弯曲成形性和抗应力松弛能力。强度或抗应力松弛特性的增加可归因于析出物间、Cr析出物间距的减少以及时效期间回复的抑制或位错运动中的银原子拖曳效应。弯曲成形性的提高可以用均匀后伸长率的增加来解释。还研究了等通道角挤压 (ECAP) 和后续热处理对 Cu-Cr-Zr-Ag 合金机械性能的影响。与热机械处理的Cu-CrZr-Ag合金相比，热处理的ECAP合金表现出较大的0.2%屈服强度、拉伸应力和断裂伸长率，但弯曲成形性和抗应力松弛性能较低。

项目成果

期刊论文数量（10）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Microstructure and mechanical properties of Cu-Ni-Si alloys

DOI：
10.1016/j.msea.2006.12.163
发表时间：
2008-06-15
期刊：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
影响因子：
6.4
作者：
Monzen, Ryoichi;Watanabe, Chihiro
通讯作者：
Watanabe, Chihiro

Cu-4.0mass%Ni-0.95mass%Si-0.02mass%P合金磯械的特性の改善

Cu-4.0mass%Ni-0.95mass%Si-0.02mass%P合金力学性能的提高