Effects of post-weld heat-treatment and second-welding on tensile properties of friction stir welded 7075-T651 aluminum alloy

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	Effects of post-weld heat-treatment and second-welding on tensile properties of friction stir welded 7075-T651 aluminum alloy
	Ren Shurong ; Ma Zongyi ; Chen Liqing ; Zhang Yuzheng
通讯作者	Ma Zongyi(zyma@imr.ac.cn)
	2007-03-01
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	43 期号:3 页码:225-230
摘要	8 nun thick 7075-T651 aluminum alloy rolled plate was friction stir welded, and the effects of post-weld heat-treatment and second-welding of the weld back on the tensile property were investigated. The results show that the single-welded sample is defect-free and the transverse strength of the weld is 71% of the base materials. However, a lazy "S" line appeared in the nugget zone as zigzag crack and discontinuous cavities after post-weld T6-treatment. With increasing solution temperature, the "S" line and abnormal grain growth became evident. After post-weld T6-treatment, the Vickers hardness of the weld was restored to the level of parent material, but the strength and elongation were significantly reduced due to the crack initiation and propagation along the "S" line. The tensile properties were greatly improved after second-welding of the weld back.
关键词	friction stir welding aluminum alloy solid solution tensile property
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000245687500001
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/89263
专题	中国科学院金属研究所
通讯作者	Ma Zongyi
作者单位	1.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110004, Peoples R China 3.Northeastern Univ, Coll Sci, Shenyang 110004, Peoples R China
推荐引用方式 GB/T 7714	Ren Shurong,Ma Zongyi,Chen Liqing,et al. Effects of post-weld heat-treatment and second-welding on tensile properties of friction stir welded 7075-T651 aluminum alloy[J]. ACTA METALLURGICA SINICA,2007,43(3):225-230.
APA	Ren Shurong,Ma Zongyi,Chen Liqing,&Zhang Yuzheng.(2007).Effects of post-weld heat-treatment and second-welding on tensile properties of friction stir welded 7075-T651 aluminum alloy.ACTA METALLURGICA SINICA,43(3),225-230.
MLA	Ren Shurong,et al."Effects of post-weld heat-treatment and second-welding on tensile properties of friction stir welded 7075-T651 aluminum alloy".ACTA METALLURGICA SINICA 43.3(2007):225-230.