Realising equal strength welding to parent metal in precipitation-hardened Al-Mg-Si alloy via low heat input friction stir welding

doi:10.1080/13621718.2017.1415249

CORC > 金属研究所 > 中国科学院金属研究所

	Realising equal strength welding to parent metal in precipitation-hardened Al-Mg-Si alloy via low heat input friction stir welding
	Zeng, X. H.1,2; Xue, P.1; Wang, D.1; Ni, D. R.1; Xiao, B. L.1; Ma, Z. Y.1
刊名	SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
	2018
卷号	23 期号:6 页码:478-486
关键词	Precipitation-hardened Al alloy friction stir welding nanostructured grains strength
ISSN号	1362-1718
DOI	10.1080/13621718.2017.1415249
通讯作者	Xue, P.(pxue@imr.ac.cn) ; Ma, Z. Y.(zyma@imr.ac.cn)
英文摘要	Two millimetres thick Al-Mg-Si (6061Al-T6) alloy plates were friction stir welded at various welding conditions. Under a low rotation rate of 400 rev min(-1) with rapid water cooling, the softening zone in the joint disappeared and a nanostructure with an average grain size of 80 nm was obtained in the stir zone (SZ). Therefore, a weld with equal strength to the parent metal (PM) was successfully achieved with the fracture occurring in the PM. Further, the average microhard-ness and ultimate tensile strength (UTS) of the SZs increased with the decreasing rotation rate and increasing cooling speed. The average microhardness and UTS of the SZ with nanostructure reached up to 134 HV and 505 MPa, respectively; though the initial strengthened precipitates disappeared. This work provides an effective strategy of achieving high property joints and enhancing the mechanical properties of precipitation-hardened Al alloys.
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000434196400004
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/128081]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xue, P.; Ma, Z. Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zeng, X. H.,Xue, P.,Wang, D.,et al. Realising equal strength welding to parent metal in precipitation-hardened Al-Mg-Si alloy via low heat input friction stir welding[J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,2018,23(6):478-486.
APA	Zeng, X. H.,Xue, P.,Wang, D.,Ni, D. R.,Xiao, B. L.,&Ma, Z. Y..(2018).Realising equal strength welding to parent metal in precipitation-hardened Al-Mg-Si alloy via low heat input friction stir welding.SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,23(6),478-486.
MLA	Zeng, X. H.,et al."Realising equal strength welding to parent metal in precipitation-hardened Al-Mg-Si alloy via low heat input friction stir welding".SCIENCE AND TECHNOLOGY OF WELDING AND JOINING 23.6(2018):478-486.