Novel integrated structure and function of Mg–Gd neutron shielding materials
As the lightest metal structural materials, magnesium (Mg) alloys offer extensive application potential. Gadolinium (Gd), as the primary alloying element in Mg alloys and recognized for its notable thermal neutron capture cross-section, is considered one of the most efficient neutron absorbers. Thus...
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| Format: | Article |
| Language: | English |
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De Gruyter
2024-03-01
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| Series: | Nanotechnology Reviews |
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| Online Access: | https://doi.org/10.1515/ntrev-2024-0007 |
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| author | Le Yunlin She Jia Mao Jianjun Jing Xuerui Yang Jijun Meng Xianfang Tan Jun Wu Lu Zhang Wei Yang Wenchao Pang Xingzhi Pan Fusheng |
| author_facet | Le Yunlin She Jia Mao Jianjun Jing Xuerui Yang Jijun Meng Xianfang Tan Jun Wu Lu Zhang Wei Yang Wenchao Pang Xingzhi Pan Fusheng |
| author_sort | Le Yunlin |
| collection | DOAJ |
| description | As the lightest metal structural materials, magnesium (Mg) alloys offer extensive application potential. Gadolinium (Gd), as the primary alloying element in Mg alloys and recognized for its notable thermal neutron capture cross-section, is considered one of the most efficient neutron absorbers. Thus, the Mg–Gd alloy is highly expected to emerge as a material with remarkable neutron absorption capacity. Hence, in this study, the thermal neutron-shielding capabilities of Mg–Gd alloys were comprehensively examined by fabricating four as-cast Mg–xGd alloys with varying compositions (x = 0, 5, 10, and 15 wt%). The obtained results were further corroborated by sophisticated modeling and calculations using SuperMC. The results revealed a direct correlation between the thermal neutron absorption capacity of the Mg–Gd alloys and the increase in Gd content, with a noteworthy neutron attenuation factor of 22.33. Moreover, in an Au ion irradiation experiment conducted at 200°C, the Mg–15Gd alloy exhibited exceptional radiation resistance, with a displacement per atom (dpa) of 10. The matrix and second-phase regions were devoid of any cavity formation. Instead, a finite number of dislocation rings were observed, forming both leaf-like and granular Gd-rich nanoscale precipitates. This study underscores the versatility of Mg–Gd alloys as efficient neutron shielding materials and structural materials tailored for applications demanding radiation resistance in diverse environments. |
| first_indexed | 2024-04-24T15:16:18Z |
| format | Article |
| id | doaj.art-a6b6dc89d4854ee195d4c1f7f993d2fd |
| institution | Directory Open Access Journal |
| issn | 2191-9097 |
| language | English |
| last_indexed | 2024-04-24T15:16:18Z |
| publishDate | 2024-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanotechnology Reviews |
| spelling | doaj.art-a6b6dc89d4854ee195d4c1f7f993d2fd2024-04-02T09:20:35ZengDe GruyterNanotechnology Reviews2191-90972024-03-01131354010.1515/ntrev-2024-0007Novel integrated structure and function of Mg–Gd neutron shielding materialsLe Yunlin0She Jia1Mao Jianjun2Jing Xuerui3Yang Jijun4Meng Xianfang5Tan Jun6Wu Lu7Zhang Wei8Yang Wenchao9Pang Xingzhi10Pan Fusheng11School of Resources, Environment and Materials, Guangxi University, Nanning530004, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing400044, ChinaThe First Research Institute of China, Nuclear Power Research and Design Institute, Chengdu610005, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing400044, ChinaKey Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu610064, ChinaBeijing Research Center for Radiation Application, Beijing Key Laboratory of Radiation Advanced Materials, Beijing100015, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing400044, ChinaThe First Research Institute of China, Nuclear Power Research and Design Institute, Chengdu610005, ChinaThe First Research Institute of China, Nuclear Power Research and Design Institute, Chengdu610005, ChinaSchool of Resources, Environment and Materials, Guangxi University, Nanning530004, ChinaSchool of Resources, Environment and Materials, Guangxi University, Nanning530004, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing400044, ChinaAs the lightest metal structural materials, magnesium (Mg) alloys offer extensive application potential. Gadolinium (Gd), as the primary alloying element in Mg alloys and recognized for its notable thermal neutron capture cross-section, is considered one of the most efficient neutron absorbers. Thus, the Mg–Gd alloy is highly expected to emerge as a material with remarkable neutron absorption capacity. Hence, in this study, the thermal neutron-shielding capabilities of Mg–Gd alloys were comprehensively examined by fabricating four as-cast Mg–xGd alloys with varying compositions (x = 0, 5, 10, and 15 wt%). The obtained results were further corroborated by sophisticated modeling and calculations using SuperMC. The results revealed a direct correlation between the thermal neutron absorption capacity of the Mg–Gd alloys and the increase in Gd content, with a noteworthy neutron attenuation factor of 22.33. Moreover, in an Au ion irradiation experiment conducted at 200°C, the Mg–15Gd alloy exhibited exceptional radiation resistance, with a displacement per atom (dpa) of 10. The matrix and second-phase regions were devoid of any cavity formation. Instead, a finite number of dislocation rings were observed, forming both leaf-like and granular Gd-rich nanoscale precipitates. This study underscores the versatility of Mg–Gd alloys as efficient neutron shielding materials and structural materials tailored for applications demanding radiation resistance in diverse environments.https://doi.org/10.1515/ntrev-2024-0007neutron-shielding materialmg alloyion irradiationsupermc |
| spellingShingle | Le Yunlin She Jia Mao Jianjun Jing Xuerui Yang Jijun Meng Xianfang Tan Jun Wu Lu Zhang Wei Yang Wenchao Pang Xingzhi Pan Fusheng Novel integrated structure and function of Mg–Gd neutron shielding materials Nanotechnology Reviews neutron-shielding material mg alloy ion irradiation supermc |
| title | Novel integrated structure and function of Mg–Gd neutron shielding materials |
| title_full | Novel integrated structure and function of Mg–Gd neutron shielding materials |
| title_fullStr | Novel integrated structure and function of Mg–Gd neutron shielding materials |
| title_full_unstemmed | Novel integrated structure and function of Mg–Gd neutron shielding materials |
| title_short | Novel integrated structure and function of Mg–Gd neutron shielding materials |
| title_sort | novel integrated structure and function of mg gd neutron shielding materials |
| topic | neutron-shielding material mg alloy ion irradiation supermc |
| url | https://doi.org/10.1515/ntrev-2024-0007 |
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