Fatigue Behavior of Friction Spot Stir Welding with No-keyhole of Aluminum Alloy

doi:10.4028/www.scientific.net/AMR.1052.509

	Fatigue Behavior of Friction Spot Stir Welding with No-keyhole of Aluminum Alloy
	Wang, Xi-Jing; Wang, Xiao-Long; Zhang, Zhong-Ke; Wang, Lei; Zhao, Qing-Shan; Deng, Xiang-Bin
	2014
关键词	Al alloy RFSSW Microstructure Fatigue fracture Lifetime Prediction
卷号	1052
DOI	10.4028/www.scientific.net/AMR.1052.509
页码	509-513
英文摘要	The fatigue properties of refill friction stir welding joints of 6082-T6 aluminum alloy were completed based on the optimal process parameters. The expression of the fatigue life prediction were obtained in a certain range. The microstructure and fatigue fracture appearance of welding joints were observed and analyzed. And the microhardness of the joints were tested. The results showed that the fatigue crack initiated from the root of the joints between the lower and upper plate, that is the junction of HAZ and TMAZ, and then propagated to fracture along the boundary between the HAZ and the TMAZ. Strengthening phase which was formed of trace elements significantly affected the fatigue properties of spot welding joints. The fatigue life of spot welding joints along with stress intensity factors decrease showed an increasing trend. Fatigue life of spot welding joints emerge an increasing trend along with decreases of the load.
会议录	INNOVATIVE MATERIALS: ENGINEERING AND APPLICATIONS
会议录出版者	TRANS TECH PUBLICATIONS LTD
会议录出版地	LAUBLSRUTISTR 24, CH-8717 STAFA-ZURICH, SWITZERLAND
语种	英语
WOS研究方向	Materials Science
WOS记录号	WOS:000348441700087
内容类型	会议论文
源URL	[http://119.78.100.223/handle/2XXMBERH/36615]
专题	材料科学与工程学院
通讯作者	Wang, Xi-Jing
作者单位	Lanzhou Univ Technol, State Key Lab Minist Non ferrous Met Adv Proc & R, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xi-Jing,Wang, Xiao-Long,Zhang, Zhong-Ke,et al. Fatigue Behavior of Friction Spot Stir Welding with No-keyhole of Aluminum Alloy[C]. 见:.