Microstructure and Properties of a Deformation-Processed Cu-Cr-Ag In Situ Composite by Directional Solidification
Microstructure and Properties of a Deformation-Processed Cu-Cr-Ag In Situ Composite by Directional Solidification
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DOI：
10.1007/s11665-013-0698-5
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发表时间：
2013-09
影响因子：
2.3
通讯作者：
Ke-ming Liu;D. Lu;Haitao Zhou;Yanling Yang;A. Atrens;J. Zou
中科院分区：
文献类型：
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作者：
Ke-ming Liu;D. Lu;Haitao Zhou;Yanling Yang;A. Atrens;J. Zou
采用铸造和定向凝固方法制备了Cu-7 Cr-0.07Ag合金，并在此基础上通过形变热处理制备了形变原位复合材料。采用光学显微镜、扫描电子显微镜、拉伸试验和微欧姆计对材料的微观结构、力学性能和电学性能进行了研究。定向凝固Cu-7 Cr-0. 07 Ag自生复合材料的第二相Cr晶粒平行于拉拔方向，且晶粒细小，具有较高的抗拉强度和较好的综合性能。
Cu-7Cr-0.07Ag alloys were prepared by casting and directional solidification, from which deformation-processed in situ composites were prepared by thermo-mechanical processing. The microstructure, mechanical properties, and electrical properties were investigated using optical microscopy, scanning electronic microscopy, tensile testing, and a micro-ohmmeter. The second-phase Cr grains of the directional solidification Cu-7Cr-0.07Ag in situ composite were parallel to the drawing direction and were finer, which led to a higher tensile strength and a better combination of properties.