Microstructure and Properties of Rapidly Solidified Cu-0.81Cr-0.12Zr Alloy

被引：11
|
作者：
Pan, Zhenya [1 ]
Chen, Jiangbiao [1 ]
Zhou, Wei [1 ]
Li, Jinfu [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China
来源：
MATERIALS TRANSACTIONS | 2013年 / 54卷 / 08期
基金：
中国国家自然科学基金;
关键词：
copper-chromium-zirconium alloy; rapid solidification; aging; microstructure; properties; CR-ZR ALLOY; CU-CR; COPPER-ALLOYS; MECHANICAL-PROPERTIES; HEAT-TREATMENTS; PRECIPITATION; COMPONENTS; PARTICLES;
D O I：
10.2320/matertrans.M2013107
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cu-0.81 mass%Cr-0.12 mass%Zr alloy was spun into ribbon and then aged at different temperatures for different time. The microstructure, microhardness and electrical conductivity were investigated. It is found that the mother alloy ingot solidified under conventional conditions consists of three phases: Cu matrix, Cr and Cu5Zr. Rapid quenching makes Cr and Zr fully dissolve into the copper matrix. As the aging proceeds, Cr and Cu5Zr phases precipitate again from the matrix. The ribbon aged at 773 K for 15 min possesses the best property: a microhardness of 212HV and an electrical conductivity of 78.9% IACS. Compared with the conventional process (homogenization treatment of a bulk alloy ingot followed by aging), the use of rapid quenching doubles the microhardness while only slightly decreasing the electrical conductivity.
引用
收藏
页码：1403 / 1407
页数：5
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