Effects of Si and Mg on mechanical properties of aluminum-steel welded-brazed joint

	Effects of Si and Mg on mechanical properties of aluminum-steel welded-brazed joint
	Huang, Jiankang 1; Li, Jie 1; Shen, Limin 2; Shi, Yu 1; Gu, Yufen 1; Fan, Ding 2
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2016-08-25
卷号	37 期号:8 页码:96-100
关键词	Binary alloys Brazing Brittle fracture Dissimilar metals Ductile fracture Energy dispersive spectroscopy Filler metals Fillers Fracture mechanics Galvanized metal Galvanizing Gas metal arc welding Gas welding Hardness Intermetallics Iron alloys Magnesium Metal testing Metals Microstructure Scanning electron microscopy Silicon Tensile testing Trace elements Welded steel structures Welds 5052 aluminum alloy Aluminum steel Double electrodes Fracture morphology Galvanized steels Interfacial microstructure Intermetallic layer Microstructures and properties
ISSN号	0253360X
英文摘要	Dissimilar metals of 5052 aluminum alloy and galvanized steel were joined with lap joint by pulsed double electrode gas metal arc welding-brazing with ER4043 filler metal and ER5356 filler metal, respectively. The interfacial microstructures, fracture behavior and fracture morphologies of the joints were analyzed by scanning electron microscopy, energy dispersive spectroscopy and X-Ray diffraction. The results show that wetting angle of weld with Al-Mg filler metal is larger than that with Al-Si filler metal. Si atoms change the shape of intermetallic compounds and inhibit the formation of Fe2Al5 intermetallic compound. The results of tensile tests show that the welded joints with Al-Mg filler metal mainly fracture along the interface between the intermetallic layer and the steel, and the fracture mode of the joints is brittle fracture. The welded joints with Al-Si filler metal mainly fracture in the fusion zone of aluminum alloy, and the fracture mode of the joints mainly is ductile fracture, but has the trace of brittle fracture. Hardness of joints with Al-Si filler metal was determined, the results show that the hardness of aluminum heat affect zone is obviously lower than that of the other zone, which leads to the joints with Al-Si filler metal failure in aluminum fusion zone. © 2016, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
语种	中文
出版者	Harbin Research Institute of Welding
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/113001]
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Great Wall Motor Company Limited, Baoding; 071000, China
推荐引用方式 GB/T 7714	Huang, Jiankang,Li, Jie,Shen, Limin,et al. Effects of Si and Mg on mechanical properties of aluminum-steel welded-brazed joint[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2016,37(8):96-100.
APA	Huang, Jiankang,Li, Jie,Shen, Limin,Shi, Yu,Gu, Yufen,&Fan, Ding.(2016).Effects of Si and Mg on mechanical properties of aluminum-steel welded-brazed joint.Hanjie Xuebao/Transactions of the China Welding Institution,37(8),96-100.
MLA	Huang, Jiankang,et al."Effects of Si and Mg on mechanical properties of aluminum-steel welded-brazed joint".Hanjie Xuebao/Transactions of the China Welding Institution 37.8(2016):96-100.