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Ultra-Fine Heterogeneous Microstructure Enables High Strength-Ductility in a Cold-Rolled Medium Mn Steel
Hu, Baojia1,2; Zheng, Chengwu1; Zheng, Qinyuan1,2; Liu, Peng1,2; Jia, Chunni1,2; Li, Dianzhong1
Corresponding AuthorZheng, Chengwu(cwzheng@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn)
2022-05-23
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages7
AbstractThe 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.
KeywordCold-rolled medium Mn steel Heterogeneous structure Yield point elongation Austenite stability Mechanical properties
Funding OrganizationNational Natural Science Foundation of China
DOI10.1007/s40195-022-01414-6
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[52071322] ; National Natural Science Foundation of China[51771192]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000800963300001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/174195
Collection中国科学院金属研究所
Corresponding AuthorZheng, Chengwu; Li, Dianzhong
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
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.
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