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| Determination of Hardening and Embrittlement of Heavy-ion Irradiated A508-3 Steel by Small Punch Test |
| Received:June 08, 2021 Revised:July 21, 2021 |
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| DOI：10.7643/issn.1672-9242.2022.01.007 |
| KeyWord:reactor pressure vessel steel heavy-ion irradiation small punch test irradiation hardening irradiation embrittlement |
| Author | Institution |
| ZHANG Xian-long |
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou , China |
| LYU Kang-yuan |
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou , China |
| DING Zhao-nan |
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou , China |
| CHEN Yu-guang |
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou , China |
| YANG Yi-tao |
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou , China |
| ZHANG Chong-hong |
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou , China |
| LIU Xiang-bing |
Life Management Technology R & D Center of Suzhou Nuclear Power Research Institute Co., Ltd., Suzhou , China |
| XUE Fei |
Life Management Technology R & D Center of Suzhou Nuclear Power Research Institute Co., Ltd., Suzhou , China |
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| Abstract: |
| The hardening and embrittlement characteristics of high-energy heavy-ions irradiated reactor pressure vessel A508-3 steel are measured by small punch test method, which provides experimental basis for the life prediction of reactor pressure vessel under working conditions. The high energy C6+ ions provided by Heavy Ion Research Facility are used to irradiate A508-3 steel at 290 ℃ by means of energy degrader, and a certain thickness of quasi-uniform damaged layer are formed on the sample surfaces. The load-displacement curves of A508-3 steel with different irradiation doses are obtained by small punch test. Through the analysis of the load-displacement curves obtained from the small punch test, the irradiation hardening and embrittlement characteristics of the samples with different irradiation doses are determined. The hardening and embrittlement of A508-3 steel increased with the increase of irradiation dose. It showed a linear increase before 0.15dpa, then increased slowly, and reached saturation at about 0.2dpa. The change trend of radiation hardening and embrittlement is consistent. |
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