Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogen
The purpose of this study is to elucidate the effect of plastic deformation on the microstructure and general corrosion behavior of Alloy 690 in a simulated steam generator crevice of a pressurized water reactor secondary system containing hydrogen. As the degree of deformation increased, the surfac...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S223878542402787X |
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| author | Ji-Young Han Soon-Hyeok Jeon Seong-Jun Ha Hee-Sang Shim Il Sohn Sung-Woo Kim |
| author_facet | Ji-Young Han Soon-Hyeok Jeon Seong-Jun Ha Hee-Sang Shim Il Sohn Sung-Woo Kim |
| author_sort | Ji-Young Han |
| collection | DOAJ |
| description | The purpose of this study is to elucidate the effect of plastic deformation on the microstructure and general corrosion behavior of Alloy 690 in a simulated steam generator crevice of a pressurized water reactor secondary system containing hydrogen. As the degree of deformation increased, the surface roughness and surface defects such as ripped surface and micro-cracks increased. Compared with the non-deformed specimen, the dislocation density of the deformed specimen greatly increased and the low coincidence site lattice grain boundaries decreased. In all specimens, the plate-like oxide particles were mainly observed with some polyhedral oxide particles. In the case of the corrosion test for 3000 h, the corrosion rates of the 15% and 30% deformed specimens increased by about 1.64 times and 1.76 times, respectively, compared with that of the non-deformed specimen. The effect of the deformed surface of the Alloy 690 is discussed in terms of various surface properties such as surface roughness, surface defects, dislocation density, and grain boundaries. |
| format | Article |
| id | doaj-art-b6a15fcc10694764ad0c5177ac989615 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-b6a15fcc10694764ad0c5177ac9896152025-08-20T02:35:26ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01339232924810.1016/j.jmrt.2024.11.259Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogenJi-Young Han0Soon-Hyeok Jeon1Seong-Jun Ha2Hee-Sang Shim3Il Sohn4Sung-Woo Kim5Materials Safety Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon, 34057, Republic of Korea; Department of Materials Science and Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of KoreaMaterials Safety Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon, 34057, Republic of Korea; Corresponding author.Materials Safety Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon, 34057, Republic of KoreaMaterials Safety Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon, 34057, Republic of KoreaDepartment of Materials Science and Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of KoreaMaterials Safety Technology Research Division, Korea Atomic Energy Research Institute, 989-111, Daedeok-daero, Yuseong-gu, Daejeon, 34057, Republic of KoreaThe purpose of this study is to elucidate the effect of plastic deformation on the microstructure and general corrosion behavior of Alloy 690 in a simulated steam generator crevice of a pressurized water reactor secondary system containing hydrogen. As the degree of deformation increased, the surface roughness and surface defects such as ripped surface and micro-cracks increased. Compared with the non-deformed specimen, the dislocation density of the deformed specimen greatly increased and the low coincidence site lattice grain boundaries decreased. In all specimens, the plate-like oxide particles were mainly observed with some polyhedral oxide particles. In the case of the corrosion test for 3000 h, the corrosion rates of the 15% and 30% deformed specimens increased by about 1.64 times and 1.76 times, respectively, compared with that of the non-deformed specimen. The effect of the deformed surface of the Alloy 690 is discussed in terms of various surface properties such as surface roughness, surface defects, dislocation density, and grain boundaries.http://www.sciencedirect.com/science/article/pii/S223878542402787XAlloy 690Plastic deformationCorrosionMicrostructureCrevice |
| spellingShingle | Ji-Young Han Soon-Hyeok Jeon Seong-Jun Ha Hee-Sang Shim Il Sohn Sung-Woo Kim Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogen Journal of Materials Research and Technology Alloy 690 Plastic deformation Corrosion Microstructure Crevice |
| title | Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogen |
| title_full | Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogen |
| title_fullStr | Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogen |
| title_full_unstemmed | Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogen |
| title_short | Effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in SG crevice condition of PWR secondary system containing hydrogen |
| title_sort | effect of plastic deformation on microstructure and general corrosion behavior of alloy 690 in sg crevice condition of pwr secondary system containing hydrogen |
| topic | Alloy 690 Plastic deformation Corrosion Microstructure Crevice |
| url | http://www.sciencedirect.com/science/article/pii/S223878542402787X |
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