Effect of heat treatment on microstructure and properties of single crystal copper cold-welded joints

论文摘要

With the means of electron backscattered diffraction（EBSD）,mechanical properties test and digital eddy current metal conductivity,the single crystal copper cold-welded joint was tested and analyzed,the structure change of cold-welded joint and the effect of heat treating on the structure and property of cold-welded joint were discussed.The results show that:The deformation area of the single crystal copper cold welded joint is broken,the crystalline grain at the interface of the joint is refined,and the single crystal structure is still maintained in the base metal area.The hardness of the deformation area increases greatly,the conductivity of the joint does not change much,and the tensile strength of the joint reaches about 70% of that of the base metal.At the interface of the heat treating joint,the single crystal structure of the deformation area and the base metal area are destroyed,and the grains grow up at the interface and the orientation is different.The hardness of the joint interface is much lower than that of the non-heat treating joint,the electrical conductivity of the joint is good,and the tensile strength of the joint is higher than that of the base metal.

论文目录

文章来源

类型: 期刊论文

作者: 黄勇,冉小龙,严晓娟,郭廷彪

来源: China Welding 2019年02期

年度: 2019

分类: 工程科技Ⅰ辑

专业: 金属学及金属工艺

单位: School of Materials Science and Engineering,Lanzhou University of Technology,State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology,Key Laboratory of Nonferrous Metal Alloys and Processing,Lanzhou University of Technology

分类号: TG407;TG441.8

页码: 1-9

总页数: 9

文件大小: 1043K

下载量: 11

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