微合金化对Cu-15Cr原位复合材料组织和性能的影响Effects of micro-alloying on microstructure and mechanical properties of Cu-15Cr in-situ composites
陈小红,刘平,田保红,张毅,贾淑果,任凤章,井晓天
摘要(Abstract):
研究了合金元素Zr对Cu-15Cr原位复合材料微观组织、力学性能、导电性能及热稳定性的影响规律。用SEM和TEM分别观察了材料的微观组织演变和析出相形貌,测试了不同应变下材料的抗拉强度和导电率,测定了材料的抗软化温度。结果表明:Zr促进Cr的析出,保持了微合金化Cu-15Cr复合材料的导电性;添加少量Zr可使Cu-15Cr-0.1Zr的抗拉强度提高约15%;Zr的加入使复合材料的抗软化温度提高了50℃左右。
关键词(KeyWords): 原位复合材料;微观组织;强度;电导率;热稳定性
基金项目(Foundation): 国家自然科学基金(50571035);; 国家高新技术研究发展计划(863计划)资助项目(2006AA03Z528)
作者(Author): 陈小红,刘平,田保红,张毅,贾淑果,任凤章,井晓天
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