Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperature
Compression tests were conducted at room and cryogenic temperatures to investigate the low-temperature plasticity in Mg–3Al–1Zn alloy. The strain to failure and fracture strength in Mg–3Al–1Zn alloy increase by 21.4% and 51.6% from room to cryogenic temperature. Using a quasi-in-situ EBSD method, it...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423016708 |
| _version_ | 1827867643152957440 |
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| author | Kai Zhang Jun Jiang |
| author_facet | Kai Zhang Jun Jiang |
| author_sort | Kai Zhang |
| collection | DOAJ |
| description | Compression tests were conducted at room and cryogenic temperatures to investigate the low-temperature plasticity in Mg–3Al–1Zn alloy. The strain to failure and fracture strength in Mg–3Al–1Zn alloy increase by 21.4% and 51.6% from room to cryogenic temperature. Using a quasi-in-situ EBSD method, it is found that {10 1¯ 2} tension twins dominate at room temperature, while abundant (10 1¯ 2)-(01 1¯ 2) twin-twin interactions are observed at cryogenic temperature. Multiple slips, including pyramidal and basal slips, occur in twin-twin interactions, enhancing the strain to failure and flow stress at cryogenic temperature. The high dislocation density near twin-twin interactions boundaries would contribute to the high hardening rate and flow stress at cryogenic temperature. This work would provide a novel way to enhance plasticity in magnesium alloys and gain an in-depth understanding of twin-twin interactions. |
| first_indexed | 2024-03-12T15:20:24Z |
| format | Article |
| id | doaj.art-f62fdd077a1241de8cd5cbd6615ebf4a |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:24Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-f62fdd077a1241de8cd5cbd6615ebf4a2023-08-11T05:34:39ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012574547459Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperatureKai Zhang0Jun Jiang1Corresponding author.; Department of Mechanical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, UKCorresponding author.; Department of Mechanical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, UKCompression tests were conducted at room and cryogenic temperatures to investigate the low-temperature plasticity in Mg–3Al–1Zn alloy. The strain to failure and fracture strength in Mg–3Al–1Zn alloy increase by 21.4% and 51.6% from room to cryogenic temperature. Using a quasi-in-situ EBSD method, it is found that {10 1¯ 2} tension twins dominate at room temperature, while abundant (10 1¯ 2)-(01 1¯ 2) twin-twin interactions are observed at cryogenic temperature. Multiple slips, including pyramidal and basal slips, occur in twin-twin interactions, enhancing the strain to failure and flow stress at cryogenic temperature. The high dislocation density near twin-twin interactions boundaries would contribute to the high hardening rate and flow stress at cryogenic temperature. This work would provide a novel way to enhance plasticity in magnesium alloys and gain an in-depth understanding of twin-twin interactions.http://www.sciencedirect.com/science/article/pii/S2238785423016708Cryogenic deformationTwin-twin interactionsMagnesium alloysPlasticityElectron backscatter diffraction (EBSD) |
| spellingShingle | Kai Zhang Jun Jiang Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperature Journal of Materials Research and Technology Cryogenic deformation Twin-twin interactions Magnesium alloys Plasticity Electron backscatter diffraction (EBSD) |
| title | Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperature |
| title_full | Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperature |
| title_fullStr | Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperature |
| title_full_unstemmed | Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperature |
| title_short | Enhancement of plasticity in Mg–3Al–1Zn alloy at cryogenic temperature |
| title_sort | enhancement of plasticity in mg 3al 1zn alloy at cryogenic temperature |
| topic | Cryogenic deformation Twin-twin interactions Magnesium alloys Plasticity Electron backscatter diffraction (EBSD) |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423016708 |
| work_keys_str_mv | AT kaizhang enhancementofplasticityinmg3al1znalloyatcryogenictemperature AT junjiang enhancementofplasticityinmg3al1znalloyatcryogenictemperature |