Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperatures
This study investigates the influence of extrusion and deformation temperatures on the mechanical properties of the AZ61 Mg alloy. Increasing the extrusion temperature from 300 to 400 °C led to larger grain size and higher basal texture intensity. At 400 °C, the AZ61 alloy exhibited more Al–Mn phase...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424020738 |
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| author | Hafiz Muhammad Rehan Tariq Umer Masood Chaudry Joung Sik Suh Young Min Kim Tea-Sung Jun |
| author_facet | Hafiz Muhammad Rehan Tariq Umer Masood Chaudry Joung Sik Suh Young Min Kim Tea-Sung Jun |
| author_sort | Hafiz Muhammad Rehan Tariq |
| collection | DOAJ |
| description | This study investigates the influence of extrusion and deformation temperatures on the mechanical properties of the AZ61 Mg alloy. Increasing the extrusion temperature from 300 to 400 °C led to larger grain size and higher basal texture intensity. At 400 °C, the AZ61 alloy exhibited more Al–Mn phases and fewer Mg17Al12 phases, indicating enhanced dissolution of Mg17Al12 in the α-Mg matrix. Uniaxial tensile tests were conducted at room temperature (RT) and cryogenic temperature (CT, −150 °C). Despite grain growth, a higher yield strength (YS) was achieved at higher extrusion temperatures due to the texture-strengthening mechanism. However, during deformation at CT, the higher YS was primarily attributed to the formation of multiple twinning within individual grains, causing twinning interactions. These twin-interacting boundaries create additional barriers to dislocation movement. Notably, the AZ61 sample extruded at 400 °C demonstrated the formation of stacking faults during deformation at CT, with dislocations accumulating around the faults. This contributed to the best strength without compromising ductility in this sample. |
| format | Article |
| id | doaj-art-7882a8a59abc4a61ad01db563d3d14be |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-7882a8a59abc4a61ad01db563d3d14be2024-12-26T08:53:36ZengElsevierJournal of Materials Research and Technology2238-78542024-11-0133335348Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperaturesHafiz Muhammad Rehan Tariq0Umer Masood Chaudry1Joung Sik Suh2Young Min Kim3Tea-Sung Jun4Department of Mechanical Engineering, Incheon National University, Incheon, 22012, Republic of KoreaResearch Institute for Engineering and Technology, Incheon National University, Incheon, 22012, Republic of KoreaLightweight Materials Research Division, Korea Institute of Materials Science, Changwon, 51508, Republic of Korea; Corresponding author.Lightweight Materials Research Division, Korea Institute of Materials Science, Changwon, 51508, Republic of KoreaDepartment of Mechanical Engineering, Incheon National University, Incheon, 22012, Republic of Korea; Research Institute for Engineering and Technology, Incheon National University, Incheon, 22012, Republic of Korea; Corresponding author. Department of Mechanical Engineering, Incheon National University, Incheon, 22012, Republic of Korea.This study investigates the influence of extrusion and deformation temperatures on the mechanical properties of the AZ61 Mg alloy. Increasing the extrusion temperature from 300 to 400 °C led to larger grain size and higher basal texture intensity. At 400 °C, the AZ61 alloy exhibited more Al–Mn phases and fewer Mg17Al12 phases, indicating enhanced dissolution of Mg17Al12 in the α-Mg matrix. Uniaxial tensile tests were conducted at room temperature (RT) and cryogenic temperature (CT, −150 °C). Despite grain growth, a higher yield strength (YS) was achieved at higher extrusion temperatures due to the texture-strengthening mechanism. However, during deformation at CT, the higher YS was primarily attributed to the formation of multiple twinning within individual grains, causing twinning interactions. These twin-interacting boundaries create additional barriers to dislocation movement. Notably, the AZ61 sample extruded at 400 °C demonstrated the formation of stacking faults during deformation at CT, with dislocations accumulating around the faults. This contributed to the best strength without compromising ductility in this sample.http://www.sciencedirect.com/science/article/pii/S2238785424020738Magnesium alloysCryogenic deformationTexture strengtheningTwin-twin interactionsStacking faults |
| spellingShingle | Hafiz Muhammad Rehan Tariq Umer Masood Chaudry Joung Sik Suh Young Min Kim Tea-Sung Jun Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperatures Journal of Materials Research and Technology Magnesium alloys Cryogenic deformation Texture strengthening Twin-twin interactions Stacking faults |
| title | Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperatures |
| title_full | Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperatures |
| title_fullStr | Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperatures |
| title_full_unstemmed | Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperatures |
| title_short | Effect of cryogenic temperature on the strengthening mechanisms of AZ61 Mg alloy extruded at different temperatures |
| title_sort | effect of cryogenic temperature on the strengthening mechanisms of az61 mg alloy extruded at different temperatures |
| topic | Magnesium alloys Cryogenic deformation Texture strengthening Twin-twin interactions Stacking faults |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424020738 |
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