| Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water | |
| Tan Jibo; Wang Xiang; Wu Xinqiang; Han En-Hou | |
| Corresponding Author | Wu Xinqiang(xqwu@imr.ac.cn) |
| 2021-03-11 | |
| Source Publication | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| Volume | 57Issue:3Pages:309-316 |
| Abstract | Environmentally assisted fatigue is an important factor in the design, safety review, and life management of key components used in nuclear power plants. Piping systems, valves, and small-bore pipes are sensitive to fatigue damage in nuclear power plants. In this work, a kind of hollow specimen for fatigue testing was designed. High-temperature pressurized water flows through the inside of the specimen, and the outside of the specimen is exposed to air. The corrosion fatigue behavior of 316LN stainless steel was investigated in high-temperature pressurized water using the hollow specimens. The experimental results show that the fatigue strength of 316LN stainless steel was reduced in a high-temperature pressurized water environment, and its fatigue life decreased with decreasing strain rate. The fatigue lives obtained by hollow and standard round bar specimens were comparable, which indicate that it is reasonable and feasible to use the hollow specimen to study the environmentally assisted fatigue performance of nuclear-grade structural materials in a high-temperature pressurized water environment. At low strain rate conditions, the fatigue crack initiation region is a typical fan-shaped pattern with quasi-cleavage cracking characteristics. The fatigue crack growth region is characterized by fatigue striation, and the environmental effects are highly significant in the stage of fatigue crack initiation. The fatigue damage mechanism of 316LN stainless steel in a high-temperature pressurized water environment is also discussed. |
| Keyword | corrosion fatigue high-temperature pressurized water stainless steel hollow specimen |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| DOI | 10.11900/0412.1961.2020.00134 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFB0702103] ; National Natural Science Foundation of China[51671201] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000618643300005 |
| Publisher | SCIENCE PRESS |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/161049 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wu Xinqiang |
| Affiliation | Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Liaoning Key Lab Safety & Assessment Tech Nucl Ma, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Tan Jibo,Wang Xiang,Wu Xinqiang,et al. Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water[J]. ACTA METALLURGICA SINICA,2021,57(3):309-316. |
| APA | Tan Jibo,Wang Xiang,Wu Xinqiang,&Han En-Hou.(2021).Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water.ACTA METALLURGICA SINICA,57(3),309-316. |
| MLA | Tan Jibo,et al."Corrosion Fatigue Behavior of 316LN Stainless Steel Hollow Specimen in High-Temperature Pressurized Water".ACTA METALLURGICA SINICA 57.3(2021):309-316. |
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