Efeects of friction stir welding parameters on microstructures and mechanical properties of ZK60 magnesium alloy joints

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	Efeects of friction stir welding parameters on microstructures and mechanical properties of ZK60 magnesium alloy joints
	Xie Guangming 1,2; Ma Zongyi 1; Geng Lin 2
刊名	ACTA METALLURGICA SINICA
	2008-06-01
卷号	44 期号:6 页码:665-670
关键词	friction stir welding magnesium alloy microstructure mechanical property
ISSN号	0412-1961
通讯作者	Ma Zongyi(zyma@imr.ac.cn)
英文摘要	Six millimeters thick ZK60 alloy plates were successfully friction stir welded (FSW). The sound welded joints were achieved under a wide range of welding parameters (rotation rate of 600-1200 r/min and traverse speed of 50-200 mm/min). After FSW, the coarse grains in ZK60 alloy were changed to fine equiaxed recrystallized grains at the nugget zone. Furthermore, the coarse MgZn2 particles were broken up and mostly dissolved into the matrix. For the ZK60 magnesium alloy, the precipitation strengthening effect was more dominant than fine-grain strengthening effect. Therefore, hardness value of the nugget zone was lower than those of the parent material and the fracture occurred at the nugget zone. At low heat input parameters (<= 800 r/min), the grain sizes in the nugget zone, and the tensile strengths and elongations of welded joints at different parameters were similar, but at high heat input parameter (1200 r/min), the grains in the nugget zone became large and the tensile strength of welded joint slightly decreased. After aging treatment, the strengths and elongations of welded joints under different parameters increased and their mechanical properties were similar.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000257410200005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/92889]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ma Zongyi
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
推荐引用方式 GB/T 7714	Xie Guangming,Ma Zongyi,Geng Lin. Efeects of friction stir welding parameters on microstructures and mechanical properties of ZK60 magnesium alloy joints[J]. ACTA METALLURGICA SINICA,2008,44(6):665-670.
APA	Xie Guangming,Ma Zongyi,&Geng Lin.(2008).Efeects of friction stir welding parameters on microstructures and mechanical properties of ZK60 magnesium alloy joints.ACTA METALLURGICA SINICA,44(6),665-670.
MLA	Xie Guangming,et al."Efeects of friction stir welding parameters on microstructures and mechanical properties of ZK60 magnesium alloy joints".ACTA METALLURGICA SINICA 44.6(2008):665-670.