Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystals
Deformation of nanocrystalline materials often involves the grain boundary (GB) dominated creep process. However, the atomistic mechanism of diffusional mass transport along GB remains unclear. Here, we presented a mechanism of stress-driven diffusional climb of GB dislocations in gold (Au) nanocrys...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-01-01
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| Series: | Materials Research Letters |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21663831.2024.2418391 |
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| _version_ | 1841555206584664064 |
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| author | Xiyao Li Guang Cao Yingbin Chen Pengfei Yue Kexing Song Jiangwei Wang |
| author_facet | Xiyao Li Guang Cao Yingbin Chen Pengfei Yue Kexing Song Jiangwei Wang |
| author_sort | Xiyao Li |
| collection | DOAJ |
| description | Deformation of nanocrystalline materials often involves the grain boundary (GB) dominated creep process. However, the atomistic mechanism of diffusional mass transport along GB remains unclear. Here, we presented a mechanism of stress-driven diffusional climb of GB dislocations in gold (Au) nanocrystals by in-situ nanomechanical testing. Successive proceeding of GB dislocation climb enhances the mass transport along GBs and contributes to a Coble-type GB deformation at room temperature. These findings provide insights into the GB-dominated diffusional plasticity in nanocrystalline materials and are of significance for the creep deformation of nanocrystalline materials. |
| format | Article |
| id | doaj-art-f0e7a56854a34bcbaa35c78a996be2ff |
| institution | Kabale University |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj-art-f0e7a56854a34bcbaa35c78a996be2ff2025-01-08T06:03:50ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-01-01131606610.1080/21663831.2024.2418391Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystalsXiyao Li0Guang Cao1Yingbin Chen2Pengfei Yue3Kexing Song4Jiangwei Wang5Material Research Institute, Henan Academy of Sciences, Zhengzhou, People’s Republic of ChinaCenter of Electron Microscopy, State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, People’s Republic of ChinaCenter of Electron Microscopy, State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, People’s Republic of ChinaMaterial Research Institute, Henan Academy of Sciences, Zhengzhou, People’s Republic of ChinaMaterial Research Institute, Henan Academy of Sciences, Zhengzhou, People’s Republic of ChinaMaterial Research Institute, Henan Academy of Sciences, Zhengzhou, People’s Republic of ChinaDeformation of nanocrystalline materials often involves the grain boundary (GB) dominated creep process. However, the atomistic mechanism of diffusional mass transport along GB remains unclear. Here, we presented a mechanism of stress-driven diffusional climb of GB dislocations in gold (Au) nanocrystals by in-situ nanomechanical testing. Successive proceeding of GB dislocation climb enhances the mass transport along GBs and contributes to a Coble-type GB deformation at room temperature. These findings provide insights into the GB-dominated diffusional plasticity in nanocrystalline materials and are of significance for the creep deformation of nanocrystalline materials.https://www.tandfonline.com/doi/10.1080/21663831.2024.2418391Grain boundary diffusional deformationgrain boundary dislocationdislocation climbultrahigh stressnanocrystalline |
| spellingShingle | Xiyao Li Guang Cao Yingbin Chen Pengfei Yue Kexing Song Jiangwei Wang Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystals Materials Research Letters Grain boundary diffusional deformation grain boundary dislocation dislocation climb ultrahigh stress nanocrystalline |
| title | Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystals |
| title_full | Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystals |
| title_fullStr | Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystals |
| title_full_unstemmed | Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystals |
| title_short | Dislocation climb mediated Coble-type grain boundary deformation in gold nanocrystals |
| title_sort | dislocation climb mediated coble type grain boundary deformation in gold nanocrystals |
| topic | Grain boundary diffusional deformation grain boundary dislocation dislocation climb ultrahigh stress nanocrystalline |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2024.2418391 |
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