Nugget Structure Evolution with Rotation Speed for High-Rotation-Speed Friction-Stir-Welded 6061 Aluminum Alloy

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	Nugget Structure Evolution with Rotation Speed for High-Rotation-Speed Friction-Stir-Welded 6061 Aluminum Alloy
	Wu ZQ(吴振强); Yu T(于涛); Zhang X(张骁); Zhu Z(朱智); Wang M(王敏); Zhang HJ(张会杰)
刊名	Journal of Materials Engineering and Performance
	2018
卷号	27 期号:3 页码:1378-1386
关键词	high-rotation-speed friction stir welding macro- and microstructure nugget zone rotation speed
ISSN号	1059-9495
通讯作者	Zhang HJ(张会杰)
产权排序	1
中文摘要	High-rotation-speed friction stir welding (HRS-FSW) is a promising technique to reduce the welding loads during FSW and thus facilitates the application of FSW for in situ fabrication and repair. In this study, 6061 aluminum alloy was friction stir welded at high-rotation speeds ranging from 3000 to 7000 rpm at a fixed welding speed of 50 mm/min, and the effects of rotation speed on the nugget zone macro- and microstructures were investigated in detail in order to illuminate the process features. Temperature measurements during HRS-FSW indicated that the peak temperature did not increase consistently with rotation speed; instead, it dropped remarkably at 5000 rpm because of the lowering of material shear stress. The nugget size first increased with rotation speed until 5000 rpm and then decreased due to the change of the dominant tool/workpiece contact condition from sticking to sliding. At the rotation speed of 5000 rpm, where the weld material experienced weaker thermal effect and higher-strain-rate plastic deformation, the nugget exhibited relatively small grain size, large textural intensity, and high dislocation density. Consequently, the joint showed superior nugget hardness and simultaneously a slightly low tensile ductility.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Multidisciplinary
研究领域[WOS]	Materials Science
关键词[WOS]	MECHANICAL-PROPERTIES ; TEMPER CONDITION ; MICROSTRUCTURE ; PARAMETERS ; JOINTS ; TOOL ; GENERATION ; SHOULDER ; STRESSES ; HARDNESS
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000426701000049
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/21588]
专题	沈阳自动化研究所_空间自动化技术研究室
作者单位	1.School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, Hebei 066004, China 2.State Key Laboratory of Robotics, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang, Liaoning 110000, China
推荐引用方式 GB/T 7714	Wu ZQ,Yu T,Zhang X,et al. Nugget Structure Evolution with Rotation Speed for High-Rotation-Speed Friction-Stir-Welded 6061 Aluminum Alloy[J]. Journal of Materials Engineering and Performance,2018,27(3):1378-1386.
APA	Wu ZQ,Yu T,Zhang X,Zhu Z,Wang M,&Zhang HJ.(2018).Nugget Structure Evolution with Rotation Speed for High-Rotation-Speed Friction-Stir-Welded 6061 Aluminum Alloy.Journal of Materials Engineering and Performance,27(3),1378-1386.
MLA	Wu ZQ,et al."Nugget Structure Evolution with Rotation Speed for High-Rotation-Speed Friction-Stir-Welded 6061 Aluminum Alloy".Journal of Materials Engineering and Performance 27.3(2018):1378-1386.