Microstructural refinement mechanism and its effect on toughness in the nugget zone of high-strength pipeline steel by friction stir welding

doi:10.1016/j.jmst.2021.04.008

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	Microstructural refinement mechanism and its effect on toughness in the nugget zone of high-strength pipeline steel by friction stir welding
	Duan, R. H.1; Xie, G. M.1; Xue, P.2; Ma, Z. Y.2; Luo, Z. A.1; Wang, C.3; Misra, R. D. K.4; Wang, G. D.1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2021-12-10
卷号	93 页码:221-231
关键词	Pipeline steel Friction stir welding Grain refinement M-A constituent Toughness
ISSN号	1005-0302
DOI	10.1016/j.jmst.2021.04.008
通讯作者	Xie, G. M.(xiegm@ral.neu.edu.cn)
英文摘要	High-strength pipeline steel was subjected to friction stir welding (FSW) at rotation rates of 400-700 rpm, and the grain refinement mechanism of the nugget zone (NZ) was determined. The thermo-mechanical process during FSW in the NZ was simulated by multi-pass thermal compression, thereby achieving the austenitic non-recrystallization temperature (T-nr). The austenitic non-recrystallization in the NZ at the lowest rotation rate of 400 rpm caused a significant grain refinement. Furthermore, the reduced rotation rate also resulted in the formation of a high ratio of island-like martensite-austenite (M-A) constituent. The toughness of the NZs was enhanced as the rotation rate decreased, which is attributed to the fine effective grains and homogeneously distributed fine M-A constituents dramatically inhibiting crack initiation and propagation. (C) 2021 Published by Elsevier Ltd on behalf of Chinese Society for Metals.
资助项目	National Nature Science Foundation of China[51774085] ; Liaoning Province Excellent Youth Foundation[2020-YQ-03] ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University (NEU)[2020RALKFKT009] ; NEU innovation team
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000718115300003
资助机构	National Nature Science Foundation of China ; Liaoning Province Excellent Youth Foundation ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University (NEU) ; NEU innovation team
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167223]
专题	金属研究所_中国科学院金属研究所
通讯作者	Xie, G. M.
作者单位	1.Northeastern Univ, State Key Lab Rolling & Automat, 3 Wenhua Rd, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Northeastern Univ, Sch Met, 3 Wenhua Rd, Shenyang 110819, Peoples R China 4.Univ Texas El Paso, Dept Met Mat & Biomed Engn, El Paso, TX 79968 USA
推荐引用方式 GB/T 7714	Duan, R. H.,Xie, G. M.,Xue, P.,et al. Microstructural refinement mechanism and its effect on toughness in the nugget zone of high-strength pipeline steel by friction stir welding[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,93:221-231.
APA	Duan, R. H..,Xie, G. M..,Xue, P..,Ma, Z. Y..,Luo, Z. A..,...&Wang, G. D..(2021).Microstructural refinement mechanism and its effect on toughness in the nugget zone of high-strength pipeline steel by friction stir welding.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,93,221-231.
MLA	Duan, R. H.,et al."Microstructural refinement mechanism and its effect on toughness in the nugget zone of high-strength pipeline steel by friction stir welding".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 93(2021):221-231.