合金元素对形变Cu-Fe原位复合材料性能的影响Effect of Alloying Elements on Properties of Deformation-processed Cu-Fe in Situ Composites
葛继平,姚再起,刘书华
摘要(Abstract)：
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 4 0 0℃之前稍稍减小 ,后快速增加 ;UTS在 15 0℃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 15 0℃× 2h ,30 0℃×2h退火处理可改善此类材料的综合性能。
关键词(KeyWords)： 形变CuFe原位复合材料;Zr;Mg;电阻率;强度
基金项目(Foundation): 大连科技计划资助 (2 0 0 2A1GX0 2 4 )
作者(Author): 葛继平,姚再起,刘书华
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