| Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water | |
| Lin, Xiaodong1,3; Peng, Qunjia2,3; Han, En-Hou3; Ke, Wei3 | |
| Corresponding Author | Peng, Qunjia(pengqunjia@yahoo.com) |
| 2022-09-01 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 120Pages:36-52 |
| Abstract | The proton-irradiated 308L stainless steel weld metal was strained by using constant extension rate tensile testing in simulated PWR primary water, and its deformation microstructures and irradiation assisted stress corrosion cracking (IASCC) behavior were investigated. The results suggest that the irradiation significantly increases the SCC susceptibility of 308L weld metal and causes various deformation microstructures including lathy faulted planes, dislocation channels and deformation twins in austenite and atomic plane rotation in delta-ferrite. The propagation of intergranular IASCC cracks is closely related to the location of the crack tip. For the crack tip in the specimen matrix interior, localized deformation is likely the key factor responsible for the crack growth. For the crack tip close to the specimen surface, however, localized corrosion along the grain boundary rather than the localized deformation appears to dominate the crack propagation. Unlike the intergranular cracks, the IASCC cracks along the delta-ferrite/austenite phase boundary can initiate either by crack initiation at the phase boundary or by crack propagation from the grain boundary. In both cases, the cracked phase boundaries contain a large number of carbides and are severely corroded, but no deformation microstructures are observed, which implies that the localized corrosion may play an important role in the IASCC along the phase boundary. In addition, delta-ferrite can retard the IASCC crack propagation along the grain boundary, which is probably related to the reduction of localized deformation by delta-ferrite. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Stainless steel weld metal Proton irradiation Deformation microstructures Irradiation assisted stress corrosion cracking Grain and phase boundaries |
| Funding Organization | Jiangsu Natural Science Foundation ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation |
| DOI | 10.1016/j.jmst.2021.11.056 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Jiangsu Natural Science Foundation[BK20191178] ; National Natural Science Foundation of China[52071018] ; China Postdoctoral Science Foundation[2021M692018] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000788171300004 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172723 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Peng, Qunjia |
| Affiliation | 1.Shanghai Univ, Inst Mat, Shanghai 200072, Peoples R China 2.Suzhou Nucl Power Res Inst, Suzhou 215004, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Lin, Xiaodong,Peng, Qunjia,Han, En-Hou,et al. Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,120:36-52. |
| APA | Lin, Xiaodong,Peng, Qunjia,Han, En-Hou,&Ke, Wei.(2022).Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,120,36-52. |
| MLA | Lin, Xiaodong,et al."Deformation and cracking behaviors of proton-irradiated 308L stainless steel weld metal strained in simulated PWR primary water".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 120(2022):36-52. |
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