| 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 Author | Zheng, Chengwu(cwzheng@imr.ac.cn) ; Li, Dianzhong(dzli@imr.ac.cn) |
| 2022-05-23 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Pages | 7 |
| Abstract | 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. |
| Keyword | Cold-rolled medium Mn steel Heterogeneous structure Yield point elongation Austenite stability Mechanical properties |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1007/s40195-022-01414-6 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[52071322] ; National Natural Science Foundation of China[51771192] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000800963300001 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174195 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zheng, Chengwu; Li, Dianzhong |
| Affiliation | 1.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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