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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
Corresponding AuthorXue, P.(pxue@imr.ac.cn) ; Ma, Z. Y.(zyma@imr.ac.cn)
2018
Source PublicationSCIENCE AND TECHNOLOGY OF WELDING AND JOINING
ISSN1362-1718
Volume23Issue:6Pages:478-486
AbstractTwo 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.
KeywordPrecipitation-hardened Al alloy friction stir welding nanostructured grains strength
DOI10.1080/13621718.2017.1415249
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000434196400004
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/128082
Collection中国科学院金属研究所
Corresponding AuthorXue, P.; Ma, Z. Y.
Affiliation1.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
Recommended Citation
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.
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