| A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance | |
| Fan, Y. H.2; Cui, F.1,2; Lu, L.1; Zhang, B.1 | |
| Corresponding Author | Zhang, B.(bxz011@imr.ac.cn) |
| 2019-06-05 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 788Pages:1066-1075 |
| Abstract | A nanotwinned 304 steel with a favorable combination of strength and ductility has been made in this work through the dynamic plastic deformation (DPD) treatment followed by a proper heat treatment. The DPD, DPD-annealed and coarse grain (CG) 304 samples were tensile tested with slow strain rate under electrochemical hydrogen charging condition. Compared with CG sample, DPD-annealed sample with a mixed structure of nanotwins (41% volume fraction), recrystallization grain (RXG, 32% volume fraction) and dislocation structures (27% volume fraction) possesses a high HE resistance. Hydrogen causes a 12.5% reduction in yield strength and 5.4% reduction in tensile strength of DPD-annealed sample because hydrogen enhances dislocations/twin boundaries (TBs) interactions and the subsequent dislocation mobility during the TB-mediated slip transfer. Hydrogen charging also causes a 41% reduction in strain induced martensite of DPD-annealed sample. Strain localization is supposed to be mitigated by the bundle form of TBs and the micro-sized RXGs, accounting for the high HE resistance of DPD-annealed alloy. Our findings suggest a new strategy to design high strength alloys with low HE susceptibility. (C) 2019 Elsevier B.V. All rights reserved. |
| Keyword | Austenite Stainless steel Nanotwin Hydrogen embrittlement TEM |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.jallcom.2019.02.312 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[U1608257] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000462767000125 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132648 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, B. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Fan, Y. H.,Cui, F.,Lu, L.,et al. A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,788:1066-1075. |
| APA | Fan, Y. H.,Cui, F.,Lu, L.,&Zhang, B..(2019).A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance.JOURNAL OF ALLOYS AND COMPOUNDS,788,1066-1075. |
| MLA | Fan, Y. H.,et al."A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance".JOURNAL OF ALLOYS AND COMPOUNDS 788(2019):1066-1075. |
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