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采用2种制备工艺,即连铸+冷拉丝加工工艺(CC+CD)和连铸+等径角挤压+冷拉丝加工工艺(CC+ECAP+CD)制备Cu-8%Ag合金(质量分数),随后进行时效处理。分别测试了不同应变量下Cu-8%Ag合金的力学性能和电学性能,探究了不同制备工艺下合金的显微组织、力学性能及电学性能的变化规律,分析了影响其性能变化的原因,并讨论了ECAP技术与传统冷加工技术相结合是否可以获得更好的综合性能。结果表明:采用CC+ECAP+CD制备的Cu-8%Ag合金的综合性能略高于CC+CD制备的合金。这对解决Cu-Ag合金的高强度与高导电率之间此消彼长的问题具有一定的研究意义和应用价值。
Cu-8% Ag alloy (mass fraction) was prepared by two kinds of preparation techniques, CC + CD and CC + ECAL + cold drawing process ), Followed by aging treatment. The mechanical properties and electrical properties of Cu-8% Ag alloys under different amounts of strain were tested respectively. The variation regularity of microstructure, mechanical properties and electrical properties of the alloy under different preparation conditions were investigated. And discussed ECAP technology and traditional cold-processing technology can get a better combination of performance. The results show that the comprehensive properties of Cu-8% Ag alloy prepared by CC + ECAP + CD are slightly higher than that of CC + CD alloy. This has certain research significance and application value to solve the trade-off between high strength and high electrical conductivity of Cu-Ag alloy.