Influence mechanism of thermoelectric coupling on microstructure of aluminum/steel continuous drive friction welding joints

doi:10.11868/j.issn.1001-4381.2021.000296

IR > 机电工程学院

	Influence mechanism of thermoelectric coupling on microstructure of aluminum/steel continuous drive friction welding joints
	Zhang, Changqing1,2 ; Wang, Shuwen 2; Luo, Dechun3 ; Shi, Wenchen 2; Liu, Xiao2 ; Cui, Guosheng 2; Chen, Boyang 2; Xin, Zhou3 ; Rui, Zhiyuan3
	2022-05-20
发表期刊	Cailiao Gongcheng/Journal of Materials Engineering
ISSN	1001-4381
卷号	50 期号:5 页码:35-42
摘要	Continuous drive friction welding technology was used to weld pure aluminum 1060/Q235 low carbon steel dissimilar material joints, and two cycles (30 d/60 d) thermoelectric coupling test (static load 392 N +high temperature 300 +DC 60 A) was carried out. The effect of thermoelectric coupling on the microstructure, mechanical properties and interface growth of the welded joints of aluminum/steel dissimilar materials was studied. The results show that the thickness of the intermetallic compounds (IMCs) layer in the radial direction of the original joint interface is uneven, and there is no obvious IMCs formation in the central area. After 30 days of thermoelectric coupling, an IMCs layer with a width of 0.3-0.5 μm at the center of the interface is formed and dispersed from the steel side to the aluminum side in granular form, the overall tensile fracture is in the thermally affected zone of the aluminum base metal. After 60 days of thermoelectric coupling, a corrosion groove appears between the IMCs layer and the steel side, and the IMCs are broken, there are no cracks on the steel side, a large number of cracks and voids from the IMCs layer to the aluminum base metal are formed on the aluminum side, segregation of components occurs at the weld and crack tip, the overall tensile fracture is at the weld. The speed of interfacial corrosion and failure rate is proportional to the thickness of the interface IMCs layer, namely vcenter1/2R2/3R. Due to the uneven structure of the original joint interface and the difference in the growth rate of the structure at different positions of the interface during the thermoelectric coupling test, the boundary line of different fracture morphologies appears at the 2/3R position of the joint interface after thermoelectric coupling. The inner side of 2/3R is dominated by quasi-cleavage fracture, and the outer side of 2/3R is the combined result of dimple fracture and quasi-cleavage fracture. © 2022, Journal of Materials Engineering. All right reserved.
关键词	Crack tips Dissimilar metals Failure analysis Friction Growth rate Low carbon steel Aluminum steel Aluminum/steel dissimilar joint Continuous drive friction welding Dissimilar joints Intermetallic compound layer Intermetallics compounds Joint interfaces Tensile fractures Thermoelectric Thermoelectric coupling
DOI	10.11868/j.issn.1001-4381.2021.000296
收录类别	EI
语种	中文
出版者	Beijing Institute of Aeronautical Materials (BIAM)
EI入藏号	20222112143965
EI主题词	Microstructure
EI分类号	531 Metallurgy and Metallography ; 545.3 Steel ; 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/158460
专题	机电工程学院兰州理工大学材料科学与工程学院马克思主义学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 3.School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学; 材料科学与工程学院
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhang, Changqing,Wang, Shuwen,Luo, Dechun,et al. Influence mechanism of thermoelectric coupling on microstructure of aluminum/steel continuous drive friction welding joints[J]. Cailiao Gongcheng/Journal of Materials Engineering,2022,50(5):35-42.
APA	Zhang, Changqing.,Wang, Shuwen.,Luo, Dechun.,Shi, Wenchen.,Liu, Xiao.,...&Rui, Zhiyuan.(2022).Influence mechanism of thermoelectric coupling on microstructure of aluminum/steel continuous drive friction welding joints.Cailiao Gongcheng/Journal of Materials Engineering,50(5),35-42.
MLA	Zhang, Changqing,et al."Influence mechanism of thermoelectric coupling on microstructure of aluminum/steel continuous drive friction welding joints".Cailiao Gongcheng/Journal of Materials Engineering 50.5(2022):35-42.