Ultra-Fine Heterogeneous Microstructure Enables High Strength-Ductility in a Cold-Rolled Medium Mn Steel

doi:10.1007/s40195-022-01414-6

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	Ultra-Fine Heterogeneous Microstructure Enables High Strength-Ductility in a Cold-Rolled Medium Mn Steel
	Hu, Baojia 1,2; Zheng, Chengwu 2; Zheng, Qinyuan 1,2; Liu, Peng 1,2; Jia, Chunni 1,2; Li, Dianzhong 2
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2022-05-23
页码	7
关键词	Cold-rolled medium Mn steel Heterogeneous structure Yield point elongation Austenite stability Mechanical properties
ISSN号	1006-7191
DOI	10.1007/s40195-022-01414-6
通讯作者	Zheng, Chengwu(cwzheng@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn)
英文摘要	The objective of the present study is to develop heterogeneous microstructure in cold-rolled medium Mn steels (MMSs) annealing strategy. The cold-rolled Fe-4.7Mn-0.15C (wt%) steel is annealed twice at different temperatures to produce an ultra-fine heterogeneous microstructure with lath-shaped and granular-shaped retained austenite. Excellent mechanical behavior of significant strength enhancement with negligible ductility loss can be achieved. The high strength-ductility properties are attributed to the active transformation induced plasticity effect over a broad strain range owing to dispersive mechanical stabilities of the heterogeneous austenite. Furthermore, the typical yield point elongation phenomenon which is commonly observed in cold-rolled MMSs can be effectively reduced by this microstructural strategy.
资助项目	National Natural Science Foundation of China[52071322] ; National Natural Science Foundation of China[51771192]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000800963300001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174194]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zheng, Chengwu; Li, Dianzhong
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Hu, Baojia,Zheng, Chengwu,Zheng, Qinyuan,et al. Ultra-Fine Heterogeneous Microstructure Enables High Strength-Ductility in a Cold-Rolled Medium Mn Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2022:7.
APA	Hu, Baojia,Zheng, Chengwu,Zheng, Qinyuan,Liu, Peng,Jia, Chunni,&Li, Dianzhong.(2022).Ultra-Fine Heterogeneous Microstructure Enables High Strength-Ductility in a Cold-Rolled Medium Mn Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,7.
MLA	Hu, Baojia,et al."Ultra-Fine Heterogeneous Microstructure Enables High Strength-Ductility in a Cold-Rolled Medium Mn Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2022):7.