采用冷拔结合中间退火工艺制备出Cu-13%Cr-0.24%Zr、Cu-15%Cr-0.24%Zr和Cu-15%Cr形变原位复合线材.研究了Cr含量、Zr元素、中间退火温度及次数对线材极限抗拉强度及导电性能的影响.结果表明:Zr元素可显著提高材料的强度,且对其导电性能影响不大:提高Cr元素含量,对材料的强度有一定贡献,但效果不明显.增加中间退火次数和提高中间退火温度都会使材料的极限抗拉强度降低,导电率升高.本实验中,通过两次500℃中间退火工艺制备的Cu-15%Cr-0.24%Zr线材获得较为优异的综合性能,抗拉强度达到1056MPa,导电率达到73 %IACS.
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