| Effect of grain refinement on the hydrogen embrittlement of 304 austenitic stainless steel | |
| Fan, Y. H.1,2,3; Zhang, B.1; Wang, J. Q.3; Han, E-H3; Ke, W.3 | |
| Corresponding Author | Zhang, B.(bxz011@imr.ac.cn) |
| 2019-10-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 35Issue:10Pages:2213-2219 |
| Abstract | The effect of grain size (in the range from 4 mu m to 12 mu m) on the hydrogen embrittlement (HE) of 304 austenitic stainless steel (ASS) was studied. HE susceptibility result shows that HE resistance increases with grain refinement. Electron backscattered diffraction kernel average misorientation (EBSD-KAM) mapping shows that the strain localization can be mitigated by grain refinement. Hence, strain localization sites which act as highways for hydrogen diffusion and preferred crack initiation sites can be reduced along with grain refinement, leading to a high HE resistance. Meanwhile, grain size shows no influence on the strain induced martensite (SIM) transformation during the hydrogen charging slow strain tensile test (SSRT). Hence, the SIM formed during hydrogen charging SSRT is not responsible for the different HE resistance of 304 ASSs with various grain sizes. Hydrogen diffusion is supposed to be controlled by a competition between short-circuit diffusion along random grain boundary (RGB) and hydrogen trapping at dislocations, leading to a maximum hydrogen diffusion coefficient in the 304 ASS with an average grain size of 8 mu m. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Stainless steel Grain refinement Hydrogen embrittlement SEM EBSD |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.jmst.2019.03.043 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[U1608257] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000484531600012 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/135206 |
| 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, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Fan, Y. H.,Zhang, B.,Wang, J. Q.,et al. Effect of grain refinement on the hydrogen embrittlement of 304 austenitic stainless steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(10):2213-2219. |
| APA | Fan, Y. H.,Zhang, B.,Wang, J. Q.,Han, E-H,&Ke, W..(2019).Effect of grain refinement on the hydrogen embrittlement of 304 austenitic stainless steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(10),2213-2219. |
| MLA | Fan, Y. H.,et al."Effect of grain refinement on the hydrogen embrittlement of 304 austenitic stainless steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.10(2019):2213-2219. |
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