In situ neutron diffraction reveals the effect of Cu micro-alloying on low-temperature tensile properties of TWIP steels

doi:10.1016/j.msea.2022.143211

IMR OpenIR

	In situ neutron diffraction reveals the effect of Cu micro-alloying on low-temperature tensile properties of TWIP steels
	Tang, Lei 1; Jiang, Fuqing 2; Liu, Huibin 3; Kabra, Saurabh 4; Cai, Biao 1
通讯作者	Cai, Biao(b.cai@bham.ac.uk)
	2022-06-15
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	845 页码:16
摘要	High manganese steels are emerging as promising structural materials for cryogenic applications due to their low production cost and great potential in achieving excellent strength-ductility combinations. Micro-alloying serves as a desirable method in tailoring stacking fault energy (SFE) of the steels and thus tailoring the mechanical performance. In this study, we investigated the dedicate role of Cu addition played on the mechanical and microstructural responses of high manganese steels at the low-temperature range (293, 173, and 77 K) via in situ neutron diffraction and microscope characterizations. The addition of 1 wt%Cu to the steel not only effectively improved the yield strength (YS) and elongation but also increased the SFE thus postponing the martensite formation. For both high Mn steels, as deformation temperature decreased, the tensile strength was increased linearly, the formation of stacking faults and dislocation was promoted, and the SFE almost linearly decreased with a slope of about 0.06 mJm(-2)center dot K-1. The contributions to YS and flow stress from lattice friction, grain boundary, dislocation, deformation twins, and phase transformation were determined based on neutron diffraction results and previously validated models. The work revealed the critical roles of Cu micro-alloying in tailoring the SFE of TWIP steels and the resulting deformation mechanisms, paving the way in adapting new high manganese steels for cryogenic applications.
关键词	High manganese steel Cryogenic deformation Neutron diffraction Stacking fault energy
DOI	10.1016/j.msea.2022.143211
收录类别	SCI
语种	英语
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:000809740100001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[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/321006/174751
专题	中国科学院金属研究所
通讯作者	Cai, Biao
作者单位	1.Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, England 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Baoshan Iron & Steel CO LTD, Shanghai 201900, Peoples R China 4.Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, England
推荐引用方式 GB/T 7714	Tang, Lei,Jiang, Fuqing,Liu, Huibin,et al. In situ neutron diffraction reveals the effect of Cu micro-alloying on low-temperature tensile properties of TWIP steels[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,845:16.
APA	Tang, Lei,Jiang, Fuqing,Liu, Huibin,Kabra, Saurabh,&Cai, Biao.(2022).In situ neutron diffraction reveals the effect of Cu micro-alloying on low-temperature tensile properties of TWIP steels.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,845,16.
MLA	Tang, Lei,et al."In situ neutron diffraction reveals the effect of Cu micro-alloying on low-temperature tensile properties of TWIP steels".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 845(2022):16.