The Effect of Black-Dot Defects on FeCrAl Radiation Hardening
FeCrAl is regarded as one of the most promising cladding materials for accident-tolerant fuel at nuclear fission reactors due to its comprehensive properties of inherent corrosion resistance, excellent irradiation resistance, high-temperature oxidation resistance, and stress corrosion cracking resis...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/3/458 |
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| author | Jian Sun Miaosen Yu Zhixian Wei Hui Dai Wenxue Ma Yibin Dong Yong Liu Ning Gao Xuelin Wang |
| author_facet | Jian Sun Miaosen Yu Zhixian Wei Hui Dai Wenxue Ma Yibin Dong Yong Liu Ning Gao Xuelin Wang |
| author_sort | Jian Sun |
| collection | DOAJ |
| description | FeCrAl is regarded as one of the most promising cladding materials for accident-tolerant fuel at nuclear fission reactors due to its comprehensive properties of inherent corrosion resistance, excellent irradiation resistance, high-temperature oxidation resistance, and stress corrosion cracking resistance. In this work, the irradiation response of FeCrAl irradiated by 2.4 MeV He<sup>2+</sup> ions with a fluence of 1.1 × 10<sup>16</sup> cm<sup>−2</sup> at room temperature was studied using X-ray diffraction, transmission electron microscopy, and nanoindentation. The characterization results of structural and mechanical properties showed that only black-dot defects exist in irradiated FeCrAl samples, and that the hardness of the irradiated samples was 11.5% higher than that of the unirradiated samples. Similar to other types of radiation defects, black-dot defects acted as fixed defect obstacles and hindered the movement of slip dislocations moving under the applied load, resulting in a significant increase in the hardness of FeCrAl. Importantly, this work points out that irradiation-induced black-dot defects can significantly affect the mechanical properties of materials, and that their contribution to radiation hardening cannot be ignored. |
| first_indexed | 2024-03-11T06:11:45Z |
| format | Article |
| id | doaj.art-dd191fe7bd9c45658c23edc1ef0098be |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T06:11:45Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-dd191fe7bd9c45658c23edc1ef0098be2023-11-17T12:38:03ZengMDPI AGMetals2075-47012023-02-0113345810.3390/met13030458The Effect of Black-Dot Defects on FeCrAl Radiation HardeningJian Sun0Miaosen Yu1Zhixian Wei2Hui Dai3Wenxue Ma4Yibin Dong5Yong Liu6Ning Gao7Xuelin Wang8Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaInstitute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE), Shandong University, Qingdao 266237, ChinaFeCrAl is regarded as one of the most promising cladding materials for accident-tolerant fuel at nuclear fission reactors due to its comprehensive properties of inherent corrosion resistance, excellent irradiation resistance, high-temperature oxidation resistance, and stress corrosion cracking resistance. In this work, the irradiation response of FeCrAl irradiated by 2.4 MeV He<sup>2+</sup> ions with a fluence of 1.1 × 10<sup>16</sup> cm<sup>−2</sup> at room temperature was studied using X-ray diffraction, transmission electron microscopy, and nanoindentation. The characterization results of structural and mechanical properties showed that only black-dot defects exist in irradiated FeCrAl samples, and that the hardness of the irradiated samples was 11.5% higher than that of the unirradiated samples. Similar to other types of radiation defects, black-dot defects acted as fixed defect obstacles and hindered the movement of slip dislocations moving under the applied load, resulting in a significant increase in the hardness of FeCrAl. Importantly, this work points out that irradiation-induced black-dot defects can significantly affect the mechanical properties of materials, and that their contribution to radiation hardening cannot be ignored.https://www.mdpi.com/2075-4701/13/3/458FeCrAlion irradiationblack-dot defectsirradiation hardening |
| spellingShingle | Jian Sun Miaosen Yu Zhixian Wei Hui Dai Wenxue Ma Yibin Dong Yong Liu Ning Gao Xuelin Wang The Effect of Black-Dot Defects on FeCrAl Radiation Hardening Metals FeCrAl ion irradiation black-dot defects irradiation hardening |
| title | The Effect of Black-Dot Defects on FeCrAl Radiation Hardening |
| title_full | The Effect of Black-Dot Defects on FeCrAl Radiation Hardening |
| title_fullStr | The Effect of Black-Dot Defects on FeCrAl Radiation Hardening |
| title_full_unstemmed | The Effect of Black-Dot Defects on FeCrAl Radiation Hardening |
| title_short | The Effect of Black-Dot Defects on FeCrAl Radiation Hardening |
| title_sort | effect of black dot defects on fecral radiation hardening |
| topic | FeCrAl ion irradiation black-dot defects irradiation hardening |
| url | https://www.mdpi.com/2075-4701/13/3/458 |
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