Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application
Evaluation of damage evolution effects in biodegradable pure Mg was carried out, using transmission electron microscope as surrogate irradiation for high-energy radionuclide β decay in Brachytherapy. Time-dependent quantitative defect production, evolution dynamics, and evolution statistics were rev...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2025-07-01
|
| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956725001471 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849239416210456576 |
|---|---|
| author | Hucheng Yu Sichen Dong Qi Chen Xiaoou Yi Hui Liu Hao Fang Wentuo Han Pingping Liu Somei Ohnuki Farong Wan |
| author_facet | Hucheng Yu Sichen Dong Qi Chen Xiaoou Yi Hui Liu Hao Fang Wentuo Han Pingping Liu Somei Ohnuki Farong Wan |
| author_sort | Hucheng Yu |
| collection | DOAJ |
| description | Evaluation of damage evolution effects in biodegradable pure Mg was carried out, using transmission electron microscope as surrogate irradiation for high-energy radionuclide β decay in Brachytherapy. Time-dependent quantitative defect production, evolution dynamics, and evolution statistics were revealed in-situ for two prism foils (z = [12¯10], [101¯0]), in as-received and heat-treated pure Mg, after 300 keV electron irradiation up to 0.468 dpa at R.T. Preferred nucleation of basal-plane interstitial-type 1/6 <202¯3> loops was confirmed, in addition to a small portion of prism-plane 1/3 <112¯0> loops. No cavities were found. A higher yield of point defect concentration and a more evident trend of defect coarsening were identified in [12¯10] than in [101¯0]. Pre-existing dislocations (on the orders of 1013−1014 m−2) in pure Mg resulted in a delay of the first occurrence of visible defects. Defect migration and elastic interactions governed the microstructural evolution of electron irradiation damage in pure Mg, giving rise to events of loop coalescence, growth, and sometimes rotation of habit plane. The influence of incident electron energy can be correlated to the rates of point defect production, and is quantifiable; however, interfered by defect cluster stability, defect mobility, and defect interactions. This forms an important theoretical basis for the application of Mg subjected to MeV-level β-decay radiation in Brachytherapy. The paper concludes with a brief comparison between Mg and conventional Ti casing, outlines the advantages and challenges, and provides reference points for the validation of Mg/Mg-alloys in Brachytherapy seed application. |
| format | Article |
| id | doaj-art-e91f000a6be142c08a232e1202f4bfe3 |
| institution | Kabale University |
| issn | 2213-9567 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-e91f000a6be142c08a232e1202f4bfe32025-08-20T04:01:01ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672025-07-011373104312110.1016/j.jma.2025.04.010Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed applicationHucheng Yu0Sichen Dong1Qi Chen2Xiaoou Yi3Hui Liu4Hao Fang5Wentuo Han6Pingping Liu7Somei Ohnuki8Farong Wan9School of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, ChinaNingbo Regen Biotech Co., Ltd, Hexiaodong Road 199, Ningbo 315157, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, China; Corresponding author.School of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, China; Faculty of Engineering, Hokkaido University, N-13, W-8, Kita-ku, Sapporo 060-8628, JapanSchool of Materials Science and Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Beijing 100083, ChinaEvaluation of damage evolution effects in biodegradable pure Mg was carried out, using transmission electron microscope as surrogate irradiation for high-energy radionuclide β decay in Brachytherapy. Time-dependent quantitative defect production, evolution dynamics, and evolution statistics were revealed in-situ for two prism foils (z = [12¯10], [101¯0]), in as-received and heat-treated pure Mg, after 300 keV electron irradiation up to 0.468 dpa at R.T. Preferred nucleation of basal-plane interstitial-type 1/6 <202¯3> loops was confirmed, in addition to a small portion of prism-plane 1/3 <112¯0> loops. No cavities were found. A higher yield of point defect concentration and a more evident trend of defect coarsening were identified in [12¯10] than in [101¯0]. Pre-existing dislocations (on the orders of 1013−1014 m−2) in pure Mg resulted in a delay of the first occurrence of visible defects. Defect migration and elastic interactions governed the microstructural evolution of electron irradiation damage in pure Mg, giving rise to events of loop coalescence, growth, and sometimes rotation of habit plane. The influence of incident electron energy can be correlated to the rates of point defect production, and is quantifiable; however, interfered by defect cluster stability, defect mobility, and defect interactions. This forms an important theoretical basis for the application of Mg subjected to MeV-level β-decay radiation in Brachytherapy. The paper concludes with a brief comparison between Mg and conventional Ti casing, outlines the advantages and challenges, and provides reference points for the validation of Mg/Mg-alloys in Brachytherapy seed application.http://www.sciencedirect.com/science/article/pii/S2213956725001471MagnesiumBrachytherapyRadionuclide β decaySurrogate irradiationPrism orientationDamage evolution |
| spellingShingle | Hucheng Yu Sichen Dong Qi Chen Xiaoou Yi Hui Liu Hao Fang Wentuo Han Pingping Liu Somei Ohnuki Farong Wan Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application Journal of Magnesium and Alloys Magnesium Brachytherapy Radionuclide β decay Surrogate irradiation Prism orientation Damage evolution |
| title | Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application |
| title_full | Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application |
| title_fullStr | Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application |
| title_full_unstemmed | Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application |
| title_short | Evaluation of damage evolution in pure magnesium during surrogate high-energy electron irradiation for Brachytherapy seed application |
| title_sort | evaluation of damage evolution in pure magnesium during surrogate high energy electron irradiation for brachytherapy seed application |
| topic | Magnesium Brachytherapy Radionuclide β decay Surrogate irradiation Prism orientation Damage evolution |
| url | http://www.sciencedirect.com/science/article/pii/S2213956725001471 |
| work_keys_str_mv | AT huchengyu evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT sichendong evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT qichen evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT xiaoouyi evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT huiliu evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT haofang evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT wentuohan evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT pingpingliu evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT someiohnuki evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication AT farongwan evaluationofdamageevolutioninpuremagnesiumduringsurrogatehighenergyelectronirradiationforbrachytherapyseedapplication |