Low-cycle fatigue behaviour of magnesium alloy thick plate joints fabricated via differential double-shoulder friction stir welding

doi:10.1016/j.ijfatigue.2024.108264

IMR OpenIR

	Low-cycle fatigue behaviour of magnesium alloy thick plate joints fabricated via differential double-shoulder friction stir welding
	Liu, Qiang 1; Wang, Wen 1,3; Zhang, Ting 1; Ma, Qianzhi 1; Han, Peng 1; Ni, Dingrui 2; Qiao, Ke 1; Wang, Kuaishe 1,3
通讯作者	Wang, Wen(wangwen2025@126.com) ; Wang, Kuaishe(wangkuaishe888@126.com)
	2024-06-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	183 页码:12
摘要	Magnesium (Mg) alloy thick plates welded by friction stir welding (FSW) often exhibit poor formability and uneven microstructures, leading to a significant deterioration in the mechanical properties. In this work, AZ31 Mg alloy plates with a thickness of 20 mm were successfully welded by differential double-shoulder friction stir welding (DDS-FSW). The low-cycle fatigue response behaviour was characterised, and the damage mechanism of the joints were studied. The results indicated that the fatigue life of the DDS-FSW joints in both parameters exceeded that of the FSW joint at 0.3 % strain amplitude, with increases of 200 % and 82 %, respectively. The predominant deformation mechanisms are basal slip and {10 1 2} twinning. Basal slip is more likely to be activated in the FSW joint, whereas {10 1 2} twinning is more easily activated in the DDS-FSW joints. Furthermore, the fatigue toughness ( W 0 ) and damage transition exponent ( beta ) could be increased by improving the asymmetric distribution of the stir zone in the joint, the strength of " orientated micro -interface " , and the proportion and distribution uniformity of twins.
关键词	Differential double-shoulder friction stir welding Magnesium alloy thick plate Low-cycle fatigue Deformation behaviour Damage mechanism
资助者	National Natural Science Foundation of China ; Key Research and Develop- ment Program of Shaanxi Province ; Natural Science Basic Research Program of Shaanxi Province
DOI	10.1016/j.ijfatigue.2024.108264
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52034005] ; National Natural Science Foundation of China[U1760201] ; Key Research and Develop- ment Program of Shaanxi Province[2017ZDXM-GY-037] ; Natural Science Basic Research Program of Shaanxi Province[2022JQ-459]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001221888700001
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/185989
专题	中国科学院金属研究所
通讯作者	Wang, Wen; Wang, Kuaishe
作者单位	1.Xian Univ Architecture & Technol, Natl & Local Joint Engn Res Ctr Funct Mat Proc, Sch Met Engn, Xian 710055, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.Xian Univ Architecture & Technol, 13 Yanta Rd, Xian 710055, Shaanxi Provinc, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qiang,Wang, Wen,Zhang, Ting,et al. Low-cycle fatigue behaviour of magnesium alloy thick plate joints fabricated via differential double-shoulder friction stir welding[J]. INTERNATIONAL JOURNAL OF FATIGUE,2024,183:12.
APA	Liu, Qiang.,Wang, Wen.,Zhang, Ting.,Ma, Qianzhi.,Han, Peng.,...&Wang, Kuaishe.(2024).Low-cycle fatigue behaviour of magnesium alloy thick plate joints fabricated via differential double-shoulder friction stir welding.INTERNATIONAL JOURNAL OF FATIGUE,183,12.
MLA	Liu, Qiang,et al."Low-cycle fatigue behaviour of magnesium alloy thick plate joints fabricated via differential double-shoulder friction stir welding".INTERNATIONAL JOURNAL OF FATIGUE 183(2024):12.