Architectured heterogeneous microstructure of medium-Mn steel through cold rolling and intercritical annealing to improve deformation behavior

doi:10.1016/j.matchar.2025.114746

IMR OpenIR

	Architectured heterogeneous microstructure of medium-Mn steel through cold rolling and intercritical annealing to improve deformation behavior
	Yu, Zhifu 1,2; Yan, Shu 1,2; Liang, Taosha 3,4; Tang, Rui 1; Li, Yutong 1; Liu, Xianghua 1,2,5,6
通讯作者	Yan, Shu(yanshu_neu@sina.com) ; Liang, Taosha(tsliang@imr.ac.cn)
	2025-03-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	221 页码:11
摘要	A bimodal heterogeneous structure was successfully obtained in Fe-11.9Mn-1.68Al-1.49Si-0.26C steel through cold rolling and intercritical annealing. It achieved an excellent combination of strength and ductility, and the product of strength and elongation (PSE) reached 57.3 GPa center dot%. The (hetero-deformation induced) HDI stress was induced into the medium-Mn steel during deformation due to heterogeneous structure. Yet, the microhardness difference between soft and hard components decreases with the increase of annealing temperature, resulting in the decrease of the HDI stress. The deliberately introduced micron-sized austenite grains facilitate to activate the intragranular dislocation sources, alleviates stress/strain concentration to a certain extent, which contributes to avoiding discontinuous yielding and L & uuml;ders strain. Metastable austenite exhibits multiple microplastic mechanisms during deformation, such as stacking faults, epsilon-martensite, and deformation twins, which cooperate with HDI strengthening to improve the strength and plasticity.
关键词	Medium-Mn steel Heterostructure L & uuml HDI hardening PLC band ders band
资助者	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of China ; The 111 Project
DOI	10.1016/j.matchar.2025.114746
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52174358] ; National Natural Science Foundation of China[52101107] ; Fundamental Research Funds for the Central Universities of China[N2302006] ; The 111 Project[B16009]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001401700800001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：1[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/321006/180304
专题	中国科学院金属研究所
通讯作者	Yan, Shu; Liang, Taosha
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Northeastern Univ, Key Lab Lightweight Struct Mat, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Liaoning Acad Mat, Shenyang 110167, Peoples R China 5.Northeastern Univ, Natl Frontiers Sci Ctr Ind Intelligence & Syst Opt, Shenyang 110819, Peoples R China 6.Northeastern Univ, Key Lab Data Analyt & Optimizat Smart Ind, Minist Educ, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Yu, Zhifu,Yan, Shu,Liang, Taosha,et al. Architectured heterogeneous microstructure of medium-Mn steel through cold rolling and intercritical annealing to improve deformation behavior[J]. MATERIALS CHARACTERIZATION,2025,221:11.
APA	Yu, Zhifu,Yan, Shu,Liang, Taosha,Tang, Rui,Li, Yutong,&Liu, Xianghua.(2025).Architectured heterogeneous microstructure of medium-Mn steel through cold rolling and intercritical annealing to improve deformation behavior.MATERIALS CHARACTERIZATION,221,11.
MLA	Yu, Zhifu,et al."Architectured heterogeneous microstructure of medium-Mn steel through cold rolling and intercritical annealing to improve deformation behavior".MATERIALS CHARACTERIZATION 221(2025):11.