Rejuvenation of plasticity via deformation graining in magnesium
<jats:title>Abstract</jats:title><jats:p>Magnesium, the lightest structural metal, usually exhibits limited ambient plasticity when compressed along its crystallographic <jats:italic>c</jats:italic>-axis (the “hard” orientation of magnesium). Here we report large plasti...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2023
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| Online Access: | https://hdl.handle.net/1721.1/147202 |
| _version_ | 1826201405057138688 |
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| author | Liu, Bo-Yu Zhang, Zhen Liu, Fei Yang, Nan Li, Bin Chen, Peng Wang, Yu Peng, Jin-Hua Li, Ju Ma, En Shan, Zhi-Wei |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Liu, Bo-Yu Zhang, Zhen Liu, Fei Yang, Nan Li, Bin Chen, Peng Wang, Yu Peng, Jin-Hua Li, Ju Ma, En Shan, Zhi-Wei |
| author_sort | Liu, Bo-Yu |
| collection | MIT |
| description | <jats:title>Abstract</jats:title><jats:p>Magnesium, the lightest structural metal, usually exhibits limited ambient plasticity when compressed along its crystallographic <jats:italic>c</jats:italic>-axis (the “hard” orientation of magnesium). Here we report large plasticity in <jats:italic>c</jats:italic>-axis compression of submicron magnesium single crystal achieved by a dual-stage deformation. We show that when the plastic flow gradually strain-hardens the magnesium crystal to gigapascal level, at which point dislocation mediated plasticity is nearly exhausted, the sample instantly pancakes without fracture, accompanying a conversion of the initial single crystal into multiple grains that roughly share a common rotation axis. Atomic-scale characterization, crystallographic analyses and molecular dynamics simulations indicate that the new grains can form via transformation of pyramidal to basal planes. We categorize this grain formation as “deformation graining”. The formation of new grains rejuvenates massive dislocation slip and deformation twinning to enable large plastic strains.</jats:p> |
| first_indexed | 2024-09-23T11:51:06Z |
| format | Article |
| id | mit-1721.1/147202 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T11:51:06Z |
| publishDate | 2023 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1472022023-01-19T03:29:07Z Rejuvenation of plasticity via deformation graining in magnesium Liu, Bo-Yu Zhang, Zhen Liu, Fei Yang, Nan Li, Bin Chen, Peng Wang, Yu Peng, Jin-Hua Li, Ju Ma, En Shan, Zhi-Wei Massachusetts Institute of Technology. Department of Nuclear Science and Engineering <jats:title>Abstract</jats:title><jats:p>Magnesium, the lightest structural metal, usually exhibits limited ambient plasticity when compressed along its crystallographic <jats:italic>c</jats:italic>-axis (the “hard” orientation of magnesium). Here we report large plasticity in <jats:italic>c</jats:italic>-axis compression of submicron magnesium single crystal achieved by a dual-stage deformation. We show that when the plastic flow gradually strain-hardens the magnesium crystal to gigapascal level, at which point dislocation mediated plasticity is nearly exhausted, the sample instantly pancakes without fracture, accompanying a conversion of the initial single crystal into multiple grains that roughly share a common rotation axis. Atomic-scale characterization, crystallographic analyses and molecular dynamics simulations indicate that the new grains can form via transformation of pyramidal to basal planes. We categorize this grain formation as “deformation graining”. The formation of new grains rejuvenates massive dislocation slip and deformation twinning to enable large plastic strains.</jats:p> 2023-01-18T18:59:47Z 2023-01-18T18:59:47Z 2022 2023-01-18T18:55:31Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/147202 Liu, Bo-Yu, Zhang, Zhen, Liu, Fei, Yang, Nan, Li, Bin et al. 2022. "Rejuvenation of plasticity via deformation graining in magnesium." Nature Communications, 13 (1). en 10.1038/S41467-022-28688-9 Nature Communications Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | Liu, Bo-Yu Zhang, Zhen Liu, Fei Yang, Nan Li, Bin Chen, Peng Wang, Yu Peng, Jin-Hua Li, Ju Ma, En Shan, Zhi-Wei Rejuvenation of plasticity via deformation graining in magnesium |
| title | Rejuvenation of plasticity via deformation graining in magnesium |
| title_full | Rejuvenation of plasticity via deformation graining in magnesium |
| title_fullStr | Rejuvenation of plasticity via deformation graining in magnesium |
| title_full_unstemmed | Rejuvenation of plasticity via deformation graining in magnesium |
| title_short | Rejuvenation of plasticity via deformation graining in magnesium |
| title_sort | rejuvenation of plasticity via deformation graining in magnesium |
| url | https://hdl.handle.net/1721.1/147202 |
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