摘要
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。
The effects of alloy elements Zr on the microstructure, mechanical, electrical properties and thermal stability of Cu-15Cr in-situ composites were investigated. The microstrueture evolution and precipitation morphology of the composites were investigated using SEM and TEM, respectively. The ultimate tensile strength and electrical conductivity at each draw strain and the soften temperature of the composites were measured. The results show that the addition of Zr accelerates the precipitation of Cr in matrix and keeps the conductivity of the micro-alloying Cu- 15Cr composite un-ehinging. The ultimate tensile strength of Cu-15Cr-0. 1Zr increases about 15 % and the soften temperature of Cu-15Cr-0. 1Zr improves 50℃ with addition trace Zr.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2009年第2期44-48,共5页
Transactions of Materials and Heat Treatment
基金
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)
关键词
原位复合材料
微观组织
强度
电导率
热稳定性
in-situ composites
microstructure
strength
electrical conductivity
thermal stability
