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

CORC > 金属研究所 > 中国科学院金属研究所

	In situ neutron diffraction reveals the effect of Cu micro-alloying on low-temperature tensile properties of TWIP steels
	Tang, Lei 4; Jiang, Fuqing 3; Liu, Huibin 2; Kabra, Saurabh 1; Cai, Biao 4
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2022-06-15
卷号	845 页码:16
关键词	High manganese steel Cryogenic deformation Neutron diffraction Stacking fault energy
ISSN号	0921-5093
DOI	10.1016/j.msea.2022.143211
通讯作者	Cai, Biao(b.cai@bham.ac.uk)
英文摘要	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.
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000809740100001
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174750]
专题	金属研究所_中国科学院金属研究所
通讯作者	Cai, Biao
作者单位	1.Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, England 2.Baoshan Iron & Steel CO LTD, Shanghai 201900, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, 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.