Inhibiting weld cracking in high-strength aluminium alloys

doi:10.1038/s41467-022-33188-x

IMR OpenIR

	Inhibiting weld cracking in high-strength aluminium alloys
	Hu, Yanan 1,2; Wu, Shengchuan 1,3; Guo, Yi 4; Shen, Zhao 5,6; Korsunsky, Alexander M.7; Yu, Yukuang 1; Zhang, Xu ; Fu, Yanan 8; Che, Zhigang 9; Xiao, Tiqiao 8; Lozano-Perez, Sergio 6; Yuan, Qingxi 10; Zhong, Xiangli 3; Zeng, Xiaoqin 5; Kang, Guozheng 1,2; Withers, Philip J.3
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)
	2022-10-03
发表期刊	NATURE COMMUNICATIONS
卷号	13 期号:1 页码:9
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.
资助者	National Natural Science Foundation of China ; EPSRC ; European Research Council
DOI	10.1038/s41467-022-33188-x
收录类别	SCI
语种	英语
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
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000865250300017
出版者	NATURE PORTFOLIO
引用统计	被引频次：53[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/321006/176166
专题	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.