Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopy
<c+a> dislocations in pure Mg have been reported to dissociate on basal planes, resulting in a sessile configuration that limits the ductility and formability of Mg. In this study, careful tilting experiments and weak-beam dark-field electron microscopy observations elucidated that <c+a>...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-04-01
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| Series: | Materials Research Letters |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21663831.2020.1721586 |
| _version_ | 1818576568615698432 |
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| author | Luoning Ma Kelvin Xie John Cai Kevin J. Hemker |
| author_facet | Luoning Ma Kelvin Xie John Cai Kevin J. Hemker |
| author_sort | Luoning Ma |
| collection | DOAJ |
| description | <c+a> dislocations in pure Mg have been reported to dissociate on basal planes, resulting in a sessile configuration that limits the ductility and formability of Mg. In this study, careful tilting experiments and weak-beam dark-field electron microscopy observations elucidated that <c+a> dislocations in the commercial alloy AZ31 remain compact without apparent dissociation. The stabilization of the <c+a> dislocation core structure with Al and Zn alloying may explain the improved strain to failure in the AZ31 alloy as compared to pure Mg samples. |
| first_indexed | 2024-12-16T06:16:05Z |
| format | Article |
| id | doaj.art-8635ec8d546944498dbd5ee1bf7dc51c |
| institution | Directory Open Access Journal |
| issn | 2166-3831 |
| language | English |
| last_indexed | 2024-12-16T06:16:05Z |
| publishDate | 2020-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Materials Research Letters |
| spelling | doaj.art-8635ec8d546944498dbd5ee1bf7dc51c2022-12-21T22:41:16ZengTaylor & Francis GroupMaterials Research Letters2166-38312020-04-018414515010.1080/21663831.2020.17215861721586Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopyLuoning Ma0Kelvin Xie1John Cai2Kevin J. Hemker3Johns Hopkins UniversityTexas A & M UniversityJohns Hopkins UniversityJohns Hopkins University<c+a> dislocations in pure Mg have been reported to dissociate on basal planes, resulting in a sessile configuration that limits the ductility and formability of Mg. In this study, careful tilting experiments and weak-beam dark-field electron microscopy observations elucidated that <c+a> dislocations in the commercial alloy AZ31 remain compact without apparent dissociation. The stabilization of the <c+a> dislocation core structure with Al and Zn alloying may explain the improved strain to failure in the AZ31 alloy as compared to pure Mg samples.http://dx.doi.org/10.1080/21663831.2020.1721586magnesium<c+a> dislocationnon-dissociationductility |
| spellingShingle | Luoning Ma Kelvin Xie John Cai Kevin J. Hemker Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopy Materials Research Letters magnesium <c+a> dislocation non-dissociation ductility |
| title | Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopy |
| title_full | Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopy |
| title_fullStr | Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopy |
| title_full_unstemmed | Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopy |
| title_short | Non-dissociated <c+a> dislocations in an AZ31 alloy revealed by transmission electron microscopy |
| title_sort | non dissociated c a dislocations in an az31 alloy revealed by transmission electron microscopy |
| topic | magnesium <c+a> dislocation non-dissociation ductility |
| url | http://dx.doi.org/10.1080/21663831.2020.1721586 |
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