通过力学性能、电学性能测量和金相、电镜观察对Cu-Al2O3弥散强化铜合金的冷加工及退火后性能和组织的变化进行了系统研究.结果表明:挤压态合金随冷拉拔变形量增大,σb和σ0.2逐渐升高,δ逐渐下降,电导率则变化甚微.合金经92%的变形后,σb,σ0.2,δ和电导率分别为490 MPa,485 MPa,10%和91.4%IACS,其在400℃～1000℃温度范围退火后性能有不同程度的回复.不同变形量的合金样品900℃1 h退火后性能均回复至挤压态水平,且未见再结晶现象.冷拉拔有利于粉末颗粒间进一步冶金化结合.
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