Effect of Electromagnetic Field on Microstructure and Properties of Cu-Cr-Co-Si Alloy

9th International Symposium on Electromagnetic Processing of Materials

材料科学;物理学

Sun, Xinglong^1 ; Jie, Jinchuan^1 ; Li, Tingju^2

Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian

116024, China^1

Laboratory of Special Processing of Raw Materials, School of Materials Science and Engineering, Dalian University of Technology, Dalian

116024, China^2

关键词: Co-Si alloy;    Electrical conductivity;    Electromagnetic forces;    High mechanical properties;    Intermediate frequencies;    Microstructure and properties;    Solid solution and aging treatments;    Solidification process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/424/1/012070/pdf
DOI  :  10.1088/1757-899X/424/1/012070

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The Cu-Cr-Co-Si alloy is a newly designed copper alloy with high mechanical properties and a proper electrical conductivity. The intermediate frequency electromagnetic field was applied during the solidification process. The results showed that the grain size remarkably refined with the application of electromagnetic field, the structure of the as-cast Cu-1Cr-1Co-0.2Si alloy transformed from coarse grain to homogeneous equiaxed grain due to the electromagnetic force. The microhardness and tensile strength of the alloy with the electromagnetic field intensity of 10 mT increased by 27.4% and 14.9% respectively compared with as-cast condition after solid solution and aging treatment. While, the electrical conductivity of the ingots with electromagnetic field is 53.1% IACS, which is slightly lower than that of the as-cast condition.