Unconventional twinning assisted by pyramidal II stacking faults
Twinning significantly affects the deformation behavior of hexagonal close-packed Mg, so a thorough understanding of twin nucleation and growth mechanisms is required for enhancing the properties of Mg-based materials. The commonly observed [Formula: see text] tension twins have been traditionally l...
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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/10.1080/21663831.2024.2406910 |
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| author | Yang Hu Dennis M. Kochmann |
| author_facet | Yang Hu Dennis M. Kochmann |
| author_sort | Yang Hu |
| collection | DOAJ |
| description | Twinning significantly affects the deformation behavior of hexagonal close-packed Mg, so a thorough understanding of twin nucleation and growth mechanisms is required for enhancing the properties of Mg-based materials. The commonly observed [Formula: see text] tension twins have been traditionally linked to 〈c + a〉 dislocation dissociation, which results in zonal dislocations with large Burgers vectors several times that of a single twinning dislocation and some residual dislocations. Contrarily, our molecular dynamics simulations reveal [Formula: see text] twin nucleation from pyramidal II stacking faults through atomic shuffling without shear displacements. This introduces an alternative twin nucleation mechanism, different from the classically accepted mechanism of dislocation dissociation. |
| format | Article |
| id | doaj-art-2b4d9d8993534bb6b4445816d4c48be2 |
| institution | Kabale University |
| issn | 2166-3831 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Taylor & Francis Group |
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| series | Materials Research Letters |
| spelling | doaj-art-2b4d9d8993534bb6b4445816d4c48be22025-01-08T06:03:50ZengTaylor & Francis GroupMaterials Research Letters2166-38312025-01-011311810.1080/21663831.2024.2406910Unconventional twinning assisted by pyramidal II stacking faultsYang Hu0Dennis M. Kochmann1Mechanics & Materials Lab, Department of Mechanical and Process Engineering, ETH Zürich, Zürich, SwitzerlandMechanics & Materials Lab, Department of Mechanical and Process Engineering, ETH Zürich, Zürich, SwitzerlandTwinning significantly affects the deformation behavior of hexagonal close-packed Mg, so a thorough understanding of twin nucleation and growth mechanisms is required for enhancing the properties of Mg-based materials. The commonly observed [Formula: see text] tension twins have been traditionally linked to 〈c + a〉 dislocation dissociation, which results in zonal dislocations with large Burgers vectors several times that of a single twinning dislocation and some residual dislocations. Contrarily, our molecular dynamics simulations reveal [Formula: see text] twin nucleation from pyramidal II stacking faults through atomic shuffling without shear displacements. This introduces an alternative twin nucleation mechanism, different from the classically accepted mechanism of dislocation dissociation.https://www.tandfonline.com/doi/10.1080/21663831.2024.2406910Twin nucleationpyramidal slipmagnesiummolecular dynamics |
| spellingShingle | Yang Hu Dennis M. Kochmann Unconventional twinning assisted by pyramidal II stacking faults Materials Research Letters Twin nucleation pyramidal slip magnesium molecular dynamics |
| title | Unconventional twinning assisted by pyramidal II stacking faults |
| title_full | Unconventional twinning assisted by pyramidal II stacking faults |
| title_fullStr | Unconventional twinning assisted by pyramidal II stacking faults |
| title_full_unstemmed | Unconventional twinning assisted by pyramidal II stacking faults |
| title_short | Unconventional twinning assisted by pyramidal II stacking faults |
| title_sort | unconventional twinning assisted by pyramidal ii stacking faults |
| topic | Twin nucleation pyramidal slip magnesium molecular dynamics |
| url | https://www.tandfonline.com/doi/10.1080/21663831.2024.2406910 |
| work_keys_str_mv | AT yanghu unconventionaltwinningassistedbypyramidaliistackingfaults AT dennismkochmann unconventionaltwinningassistedbypyramidaliistackingfaults |