Achievement of high strength and plasticity product of the nugget zone in friction stir welded high-Mn steel via controlling stacking fault energy

doi:10.1016/j.msea.2022.144427

IMR OpenIR

	Achievement of high strength and plasticity product of the nugget zone in friction stir welded high-Mn steel via controlling stacking fault energy
	Wang, Y. Q.1; Guo, S.1; Duan, R. H.1; Luo, Z. A.1; Chen, J.1; Ma, Z. Y.2; Xie, G. M.1
通讯作者	Xie, G. M.(xiegm@ral.neu.edu.cn)
	2023-01-18
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	862 页码:12
摘要	The high Mn steel (Mn >= 20 wt.%) is widely applied because of excellent cryogenic properties. In the fusion -welded high-Mn steel joint, the Mn vapor and segregation degrade the joint quality. Friction stir welding (FSW) produces a high-Mn steel joint without defect, but the nugget zone (NZ) exhibits a poor plasticity. In this work, the preheating was subjected to FSW high-Mn steel to improve the plasticity of the NZ. Compared with the as-welded NZ, the as-preheated NZ contained slightly coarser austenite with lower density of dislocations (6.7 x 1014 m-2), and had a lower stacking fault energy (SFE) (47.18 mJ m-2) at room temperature. The lower SFE caused the deformation mechanism of dislocation slip and active twinning-induced plasticity (TWIP) in the as -preheated NZ owing to the lower back stress and critical twinning stress. Subsequently, a high strength and plasticity product of 62 GPa% was achieved in the as-preheated NZ, which was consistent with high strain hardening rate. At cryogenic temperature of-196 degrees C, the SFE of the as-preheated NZ decreased to 35.66 mJ m- 2, but more active TWIP besides dislocation slip was found during tension. Therefore, the as-preheated NZ exhibited excellent strength and plasticity product of 91.9 GPa%. Furthermore, the yield strength of the as -preheated NZ was slightly reduced, which was attributed to the decreased of dislocation density and grain growth.
关键词	Friction stir welding High Mn steel Preheating Stacking fault energy TWIP effect
资助者	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
DOI	10.1016/j.msea.2022.144427
收录类别	SCI
语种	英语
资助项目	National Nature Science Foundation of China[52274378] ; 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[2020RALKFKT009]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000905156300001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：18[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/321006/175703
专题	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
推荐引用方式 GB/T 7714	Wang, Y. Q.,Guo, S.,Duan, R. H.,et al. Achievement of high strength and plasticity product of the nugget zone in friction stir welded high-Mn steel via controlling stacking fault energy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,862:12.
APA	Wang, Y. Q..,Guo, S..,Duan, R. H..,Luo, Z. A..,Chen, J..,...&Xie, G. M..(2023).Achievement of high strength and plasticity product of the nugget zone in friction stir welded high-Mn steel via controlling stacking fault energy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,862,12.
MLA	Wang, Y. Q.,et al."Achievement of high strength and plasticity product of the nugget zone in friction stir welded high-Mn steel via controlling stacking fault energy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 862(2023):12.