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Inhibiting weld cracking in high-strength aluminium alloys

文献类型：期刊论文

作者Hu, Yanan1,2; Wu, Shengchuan1,3; Guo, Yi4; Shen, Zhao5,6; Korsunsky, Alexander M.7; Yu, Yukuang1; Zhang, Xu; Fu, Yanan8; Che, Zhigang9; Xiao, Tiqiao8
刊名NATURE COMMUNICATIONS
出版日期2022-10-03
卷号13期号:1页码:9
DOI10.1038/s41467-022-33188-x
通讯作者Wu, Shengchuan(wusc@swjtu.edu.cn) ; Shen, Zhao(shenzhao081@sjtu.edu.cn) ; Withers, Philip J.(p.j.withers@manchester.ac.uk)
英文摘要Cracking from a fine equiaxed zone (FQZ), often just tens of microns across, plagues the welding of 7000 series aluminum alloys. Using a multiscale correlative methodology, from the millimeter scale to the nanoscale, we shed light on the strengthening mechanisms and the resulting intergranular failure at the FQZ. We show that intergranular AlCuMg phases give rise to cracking by micro-void nucleation and subsequent link-up due to the plastic incompatibility between the hard phases and soft (low precipitate density) grain interiors in the FQZ. To mitigate this, we propose a hybrid welding strategy exploiting laser beam oscillation and a pulsed magnetic field. This achieves a wavy and interrupted FQZ along with a higher precipitate density, thereby considerably increasing tensile strength over conventionally hybrid welded butt joints, and even friction stir welds. Fusion welding of 7000 series aluminum alloy is plagued by cracking from a fine equiaxed zone (FQZ). Here, the authors quantify key softening mechanisms, show the damage accumulation sequence, and propose a hybrid laser/arc welding strategy to mitigate the FQZ and increase weld strength and toughness.
资助项目National Natural Science Foundation of China[U2032121] ; National Natural Science Foundation of China[12192212] ; EPSRC[EP/R00661X] ; EPSRC[EP/V007785/1] ; European Research Council[695638]
WOS研究方向Science & Technology - Other Topics
语种英语
出版者NATURE PORTFOLIO
WOS记录号WOS:000865250300017
资助机构National Natural Science Foundation of China ; EPSRC ; European Research Council
源URL[http://ir.imr.ac.cn/handle/321006/176165]  
专题金属研究所_中国科学院金属研究所
通讯作者Wu, Shengchuan; Shen, Zhao; Withers, Philip J.
作者单位1.Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu, Peoples R China
2.Southwest Jiaotong Univ, Sch Mech & Aerosp Engn, Chengdu, Peoples R China
3.Univ Manchester, Henry Royce Inst, Dept Mat, Manchester, Lancs, England
4.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
5.Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai, Peoples R China
6.Univ Oxford, Dept Mat, Oxford, England
7.Univ Oxford, Dept Engn Sci, Oxford, England
8.Shanghai Adv Sci, Shanghai Synchrotron Radiat Facil SSRF, Shanghai, Peoples R China
9.AVIC Mfg Technol Inst, Sci & Technol Power BeamProc Lab, Beijing, Peoples R China
10.Chinese Acad Sci, Beijing Synchrotron Radiat Facil BSRF, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Hu, Yanan,Wu, Shengchuan,Guo, Yi,et al. Inhibiting weld cracking in high-strength aluminium alloys[J]. NATURE COMMUNICATIONS,2022,13(1):9.
APA Hu, Yanan.,Wu, Shengchuan.,Guo, Yi.,Shen, Zhao.,Korsunsky, Alexander M..,...&Withers, Philip J..(2022).Inhibiting weld cracking in high-strength aluminium alloys.NATURE COMMUNICATIONS,13(1),9.
MLA Hu, Yanan,et al."Inhibiting weld cracking in high-strength aluminium alloys".NATURE COMMUNICATIONS 13.1(2022):9.

入库方式： OAI收割

来源：金属研究所

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