Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses
Johari–Goldstein (JG) relaxation closely relates to the shear transformation zones (STZs) in the flow of metallic glasses (MGs). However, the actual role played by JG relaxation in the STZ-evoked plastic deformation of MGs remains unknown. In this work, by substituting the transition metal (TM) elem...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-09-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21663831.2019.1620360 |
| _version_ | 1819021125909217280 |
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| author | M. Zhang Y. Chen R. G. He S. F. Guo J. Ma L. H. Dai |
| author_facet | M. Zhang Y. Chen R. G. He S. F. Guo J. Ma L. H. Dai |
| author_sort | M. Zhang |
| collection | DOAJ |
| description | Johari–Goldstein (JG) relaxation closely relates to the shear transformation zones (STZs) in the flow of metallic glasses (MGs). However, the actual role played by JG relaxation in the STZ-evoked plastic deformation of MGs remains unknown. In this work, by substituting the transition metal (TM) element in La(TM)Al MGs (TM = Ni, Co, Cu, CuNi) to tune the feature of JG relaxation, how JG relaxation alters the deformation behaviors of MGs is tentatively examined with nanoindentation. The results demonstrate that JG relaxation modulates the anelastic to plastic transition rate in the plastic deformation accommodation of MGs via a characteristic relaxation time. |
| first_indexed | 2024-12-21T04:02:08Z |
| format | Article |
| id | doaj.art-e9cc2fc963af4761bbff099bd6867905 |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-12-21T04:02:08Z |
| publishDate | 2019-09-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-e9cc2fc963af4761bbff099bd68679052022-12-21T19:16:41ZengTaylor & Francis GroupMaterials Research Letters2166-38312019-09-017938339110.1080/21663831.2019.16203601620360Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glassesM. Zhang0Y. Chen1R. G. He2S. F. Guo3J. Ma4L. H. Dai5Jinan UniversityInstitute of Mechanics, Chinese Academy of SciencesSouthwest UniversitySouthwest UniversityShenzhen UniversityInstitute of Mechanics, Chinese Academy of SciencesJohari–Goldstein (JG) relaxation closely relates to the shear transformation zones (STZs) in the flow of metallic glasses (MGs). However, the actual role played by JG relaxation in the STZ-evoked plastic deformation of MGs remains unknown. In this work, by substituting the transition metal (TM) element in La(TM)Al MGs (TM = Ni, Co, Cu, CuNi) to tune the feature of JG relaxation, how JG relaxation alters the deformation behaviors of MGs is tentatively examined with nanoindentation. The results demonstrate that JG relaxation modulates the anelastic to plastic transition rate in the plastic deformation accommodation of MGs via a characteristic relaxation time.http://dx.doi.org/10.1080/21663831.2019.1620360Metallic glassesJohari–Goldstein relaxationplasticitynanoindentation |
| spellingShingle | M. Zhang Y. Chen R. G. He S. F. Guo J. Ma L. H. Dai Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses Materials Research Letters Metallic glasses Johari–Goldstein relaxation plasticity nanoindentation |
| title | Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses |
| title_full | Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses |
| title_fullStr | Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses |
| title_full_unstemmed | Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses |
| title_short | Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses |
| title_sort | probing the role of johari goldstein relaxation in the plasticity of metallic glasses |
| topic | Metallic glasses Johari–Goldstein relaxation plasticity nanoindentation |
| url | http://dx.doi.org/10.1080/21663831.2019.1620360 |
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