Effects of heat treatment after welding on friction stir welding joints of high-strength aluminum alloy

	Effects of heat treatment after welding on friction stir welding joints of high-strength aluminum alloy
	Wang, Xi-Jing 1,2; Sun, Gui-Ping 1,2; Zhang, Jie 1,2; Xu, Cheng 1,2; Li, Shu-Wei 1,2; Niu, Yong 1,2
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2009-03-01
卷号	19 期号:3 页码:484-489
关键词	After-heat treatment Aluminum alloys Fracture mechanics Friction High strength alloys Microstructure Research laboratories Tensile strength Textures 7075 aluminum alloy Effects of heat treatment Experimental conditions Friction stir welding joints High strength aluminum alloys Microstructure and properties Strengthening phase Thermomechanically affected zones
ISSN号	10040609
英文摘要	The microstructure and property before and after heat treatment of friction stir welded 5 mm aero 7075 aluminum alloy were investigated. The results show that when the rotating speed of stirring joint is 600 r/min and the welding speed is 60 mm/min, the tensile strength can reach 381 MPa that is 84.6% of the base metals, which are regarded as the most ideal parameters under experimental conditions. There are equiaxed grains with size of 6-7 μm in weld nugget. After heat treatment, the tensile strength can reach 415 MPa. The lowest hardness appears in thermomechanically affected zone (TMAZ) of advancing side. The fractography has a characteristic of dimples of strengthening phase and the strain fracture appears in TMAZ of advancing side of joints. The weak point of friction stir welding joint for 7075 aluminum alloy occurs in the TMAZ.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111599]
专题	材料科学与工程学院机电工程学院
作者单位	1.State Key Laboratory of Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Wang, Xi-Jing,Sun, Gui-Ping,Zhang, Jie,et al. Effects of heat treatment after welding on friction stir welding joints of high-strength aluminum alloy[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2009,19(3):484-489.
APA	Wang, Xi-Jing,Sun, Gui-Ping,Zhang, Jie,Xu, Cheng,Li, Shu-Wei,&Niu, Yong.(2009).Effects of heat treatment after welding on friction stir welding joints of high-strength aluminum alloy.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,19(3),484-489.
MLA	Wang, Xi-Jing,et al."Effects of heat treatment after welding on friction stir welding joints of high-strength aluminum alloy".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 19.3(2009):484-489.