Effect of trace La on microstructure and properties of Cu-Cr-In alloys

被引：0
|
作者：
Xie, Haofeng [1 ,2 ]
Zhang, Wenjing [1 ,2 ]
Huang, Shuhui [1 ,2 ]
Chen, Huiming [3 ]
Wang, Hang [3 ]
Yang, Zhen [1 ,2 ]
Peng, Lijun [1 ,2 ]
Yang, Bin [3 ]
机构：
[1] GRINM Grp Co Ltd, State Key Lab Nonferrous Met & Proc, Beijing 100088, Peoples R China
[2] GRIMAT Engn Inst Co Ltd, Beijing 101407, Peoples R China
[3] Jiangxi Univ Sci & Technol, Fac Mat Met & Chem, Ganzhou 341000, Jiangxi, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2020年 / 7卷 / 06期
基金：
国家重点研发计划;
关键词：
Cu-Cr-In-La; tensile strength; intermetallic compound; rare earth; MECHANICAL-PROPERTIES; HEAT-TREATMENT; ZR ALLOYS; AG ALLOY; EVOLUTION; BEHAVIOR; STRENGTH;
D O I：
10.1088/2053-1591/ab9778
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The strength and conductivity of Cu-Cr-In alloys with trace La and different processing states were compared. Then, the influence of La on the structure and properties of the Cu-Cr-In alloy and the associated mechanisms were analyzed. The mechanical properties and microstructural evolution of the alloy were investigated via scanning electron microscopy, transmission electron microscopy, and tensile strength measurements. The results showed that the addition of 0.07wt% La to the Cu-Cr-In alloy had the effect of purifying the alloy melt and removing impurities, which improved the electrical conductivity of the alloy. However, the formation of rare earth intermetallic compounds reduced the tensile strength of the Cu-Cr-In-La alloy. After thermomechanical treatment, the Cu-Cr-In-La alloy reached a peak strength of 457 MPa and a conductivity of 85% IACS.
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页数：8
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