利用电阻测量仪,电液伺服万能试验机(MTS),扫描电镜(SEM)和透射电镜(TEM)研究了添加微量Zr,Mg元素及Fe含量对室温和退火状态的形变Cu-Fe原位复合材料的组织、导电性和强度的影响.结果表明,添加Zr后,在不明显损失导电性的情况下,可使极限抗拉强度(UTS)提高约10%.进行2h不同温度退火处理,材料的电阻率在400℃之前稍稍减小,后快速增加;UTS在150℃之前稍稍增加,后快速减小,Zr的加入改善了材料的热稳定性,表现在随着退火温度的增加,UTS下降的幅度变缓.添加Mg使材料变脆.形变量和Fe含量的增加使材料的电阻率和强度显著增大.经150℃×2h,300℃×2 h退火处理可改善此类材料的综合性能.
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