大变形对连铸Cu-(2%～8%)Ag合金力学性能及导电率的影响  

Effect of Large Deformation on Mechanical Property and Electrical Conductivity of Cu-(2%～8%)Ag Alloys Produced by Continuous Casting

作　　者：沈月[1] 杨有才[1] 张国全[1] 付作鑫[1] 陈永泰[1] 张吉明[1] 王塞北[1] 谢明[1] 

机构地区：[1]昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,云南昆明650106

出　　处：《稀有金属材料与工程》2014年第7期1748-1753,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51164015);云南省应用基础研究重点项目(2011FA026)

摘　　要：采用连续铸造和冷拉集成技术制备Cu-Ag系合金,最终进行时效处理。分别测量不同真应变η下合金的力学性能和电学性能,探究不同条件下合金的显微组织、力学性能及电学性能的变化规律,并对其强化机理和导电机理进行了讨论。结果表明:随着真应变量的增加,Cu-Ag系合金的抗拉强度和硬度经历了显著增加到上升趋于缓慢,最后再趋显著增加的过程,而导电率则随着施加应变的增加出现相反的规律。此法制备的Cu-Ag系合金工艺简单,综合性能有所提高。Cu-Ag alloys were prepared by the integrated technique of continuous casting and cold-drawing and finally aged. Mechanical and electrical properties of the alloys with different true strain r/were measured. The change rules of their microstructure and mechanical and electrical properties were investigated and their strengthening mechanism and conductive mechanism were also discussed. The results show that with the increase of the true strain, the ultimate tensile strength and hardness of Cu-Ag alloys firstly increase significantly and then slowly and finally remarkably but the change rules of electrical conductivity with the increase of the applied strain is opposite completely. This preparation method of Cu-Ag alloys is simple and can improve their comprehensive performance.

关 键 词：CU-AG合金 强度 硬度 导电率 

分 类 号：TG146.11[一般工业技术—材料科学与工程]