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

• 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

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Cu-0.5mass%Cr合金经形变热处理后的显微组织和力学性能。添加0.15%Zr可提高合金的强度和抗应力松弛性能。强度或抗应力松弛能力的提高是由于Cr沉淀相间距的减小和Cu_5Zr相的析出，或由于Cu_5Zr沉淀相优先在位错上形成而Cr沉淀相不优先在位错上形成。添加0.1%的Ag可提高强度、弯曲成形性和抗应力松弛性。强度或抗应力松弛性的增加归因于Cr沉淀物的间距和时效期间的回复抑制的减少或归因于Ag原子对位错运动的拖曳效应。弯曲成形性的改善可以用后均匀延伸率的增加来解释。研究了等通道转角挤压（ECAP）及后续热处理对Cu-Cr-Zr-Ag合金力学性能的影响。与Cu-CrZr-Ag合金相比，ECAP热处理后合金的0.2%屈服应力、拉伸应力和断裂伸长率均有所提高，但弯曲成形性能和抗应力松弛性能有所降低。

项目成果

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

• 发表时间: 2006
• 期刊: 銅と銅合金 45・1
• 作者: 渡邊千尋;宮腰 勝;西嶋文哉;門前亮一
• 通讯作者: 門前亮一

Improvements of Mechanical Properties in a Cu-4.0mass%Ni-0.95mass%Si-0.02mass%P Alloy

改进%20of%20机械%20性能%20in%20a%20Cu-4.0mass%Ni-0.95mass%Si-0.02mass%P%20合金

• 发表时间: 2006
• 期刊: Journal of the JRICu 45-1
• 作者: Chihiro Watanabe;Masaru Miyakoshi;Humiya Nishijima;RyoichiMonzen
• 通讯作者: RyoichiMonzen

Cu-4, Omass%Ni-0.95mass%Si-0.02mass%P合金の機械的特性の改善

Cu-4、Omass%Ni-0.95mass%Si-0.02mass%P合金机械性能的改善

• 发表时间: 2006
• 期刊: 銅と銅合金 45・1
• 作者: 渡邊千尋;宮腰 勝;西嶋文哉;門前亮一
• 通讯作者: 門前亮一

Cu-0.5mass%Cr-0.15mass%Zr系合金の組織と機械的特性

Cu-0.5mass%Cr-0.15mass%Zr合金的显微组织与力学性能

• 发表时间: 2007
• 期刊: 銅と銅合金 46・1(印刷中)
• 作者: 渡邊千尋;佐藤龍彦;山尾勇介;門前亮一
• 通讯作者: 門前亮一