Interfacial Behavior and Joint Performance of High-entropy Alloy CoCrFeMnNi and Pure Cu Joints Obtained by Vacuum Diffusion Welding

doi:10.3901/JME.2017.02.084

	Interfacial Behavior and Joint Performance of High-entropy Alloy CoCrFeMnNi and Pure Cu Joints Obtained by Vacuum Diffusion Welding
	Liu, Yulin 1; Luo, Yongchun1,2 ; Zhao, Dan1 ; Zhang, Gouqing 1; Kang, Long 1
	2017-01-20
发表期刊	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
ISSN	05776686
卷号	53 期号:2 页码:84-91
摘要	A good bonding between the high-entropy alloy (HEA)CoCrFeMnNi and pure Cu is obtained at 750-850 by vacuum solid-state diffusion welding. The influence of bonding temperature on the interfacial behavior and the joints mechanical properties is investigated by scanning electron microscopy, energy disperse spectroscopy, microhardness test and tensile test. The diffusion coefficient of Cu in CoCrFeMnNi HEA is calculated and analyzed by fick's second law. The results show that the diffusion rate of Cu in HEA side is faster than that of HEA elements in Cu side and, as increasing with the temperature, the reduce extent of the HEA elements concentration distribution in the diffusion area agree with the sequence of elements in the order of Mn>Cr>Fe>Co>Ni. Theoretical calculations show that the average diffusion coefficient of Cu in HEA is significantly lower than those in the reference stainless steel. After diffusion bonding, a reaction layer consisted with FCC solid solution is formed in the interface region of all the joints, and there is no intermetallic compounds appeared. All the joints fracture occurred only in Cu sides far away from the interface, the tensile strength and strain all decrease as the bonding temperature increase. In the bonding temperature of 750, the tensile strength and strain reach its maximum value of 224 MPa and 33%, respectively. © 2017 Journal of Mechanical Engineering.
关键词	Chromium alloys Cobalt alloys Diffusion in solids Entropy High-entropy alloys Iron alloys Manganese alloys Mechanical properties Scanning electron microscopy Tensile strength Tensile testing Vacuum welding Bonding temperatures CoCrFeMnNi HEA/Cu Concentration distributions Interfacial behaviors Microhardness tests Solid-state diffusion Theoretical calculations Vacuum diffusion welding
DOI	10.3901/JME.2017.02.084
收录类别	EI
语种	中文
出版者	Editorial Office of Chinese Journal of Mechanical Engineering
EI入藏号	20171803618175
EI主题词	Copper
EI分类号	531.2 Metallography - 538.2.1 Welding Processes - 543.1 Chromium and Alloys - 543.2 Manganese and Alloys - 544.1 Copper - 545.1 Iron - 545.2 Iron Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 641.1 Thermodynamics - 951 Materials Science
来源库	Compendex
分类代码	538.2.1 Welding Processes - 543.1 Chromium and Alloys - 543.2 Manganese and Alloys - 544.1 Copper - 545.2 Iron Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 641.1 Thermodynamics - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114294
专题	材料科学与工程学院石油化工学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Liu, Yulin,Luo, Yongchun,Zhao, Dan,et al. Interfacial Behavior and Joint Performance of High-entropy Alloy CoCrFeMnNi and Pure Cu Joints Obtained by Vacuum Diffusion Welding[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2017,53(2):84-91.
APA	Liu, Yulin,Luo, Yongchun,Zhao, Dan,Zhang, Gouqing,&Kang, Long.(2017).Interfacial Behavior and Joint Performance of High-entropy Alloy CoCrFeMnNi and Pure Cu Joints Obtained by Vacuum Diffusion Welding.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,53(2),84-91.
MLA	Liu, Yulin,et al."Interfacial Behavior and Joint Performance of High-entropy Alloy CoCrFeMnNi and Pure Cu Joints Obtained by Vacuum Diffusion Welding".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 53.2(2017):84-91.