Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditions
The significance of creep performance in Mg alloys is underscored by their widespread use as thermally conductive structural components in industries. This work investigated the influence of microstructure characteristics on the creep properties of dilute Mg–Mn–Zn alloys under varied processing cond...
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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/S223878542402742X |
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| author | Haifeng Liu Ming-Chun Zhao Zhenyu Xiao Ying-Chao Zhao Hiromi Nagaumi Taku Sakai Andrej Atrens Xuyue Yang |
| author_facet | Haifeng Liu Ming-Chun Zhao Zhenyu Xiao Ying-Chao Zhao Hiromi Nagaumi Taku Sakai Andrej Atrens Xuyue Yang |
| author_sort | Haifeng Liu |
| collection | DOAJ |
| description | The significance of creep performance in Mg alloys is underscored by their widespread use as thermally conductive structural components in industries. This work investigated the influence of microstructure characteristics on the creep properties of dilute Mg–Mn–Zn alloys under varied processing conditions. The specimen designations were: AH (as-homogenized), AE (as-extruded), and AC (as-hot compressed). The creep resistance was as follows: AH > AE > AC, although AC exhibited the best mechanical properties. AH primarily exhibited cross-slip and twinning. AE displayed cross-slip and twinning for coarse non-dynamically recrystallized (non-DRXed) grains, and basal <a> slip and pyramidal <c + a> slip for fine DRXed grains. AC had basal <a> slip and pyramidal <c + a> slip. The highest creep resistance for AH resulted from the stable solid solution strengthening and the interplay between twinning and cross-slip. In contrast, AC, with the lowest creep resistance, experienced an accelerated creep strain due to precipitate coarsening and frequent grain boundary sliding. A combination of pipe diffusion-controlled and grain boundary diffusion-controlled slip contributed 57% to the steady creep rate. This work provides a considerable insight for the application of Mg alloys as thermally conductive structural components. |
| format | Article |
| id | doaj-art-af42e44f1fa34382b1aaace70f677923 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-af42e44f1fa34382b1aaace70f6779232025-08-20T02:35:32ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01339297931210.1016/j.jmrt.2024.11.212Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditionsHaifeng Liu0Ming-Chun Zhao1Zhenyu Xiao2Ying-Chao Zhao3Hiromi Nagaumi4Taku Sakai5Andrej Atrens6Xuyue Yang7College of Mechanical Engineering, University of South China, Hengyang, 421001, China; School of Materials Science and Engineering, Central South University, Changsha, 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha, 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha, 410083, ChinaCollege of Mechanical Engineering, University of South China, Hengyang, 421001, China; Corresponding author.School of Iron and Steel, Soochow University, Suzhou, 215100, ChinaThe University of Electro-Communications, Chofu, 182-8585, JapanSchool of Mechanical & Mining Engineering, University of Queensland, Brisbane, QLD, 4072, AustraliaSchool of Materials Science and Engineering, Central South University, Changsha, 410083, ChinaThe significance of creep performance in Mg alloys is underscored by their widespread use as thermally conductive structural components in industries. This work investigated the influence of microstructure characteristics on the creep properties of dilute Mg–Mn–Zn alloys under varied processing conditions. The specimen designations were: AH (as-homogenized), AE (as-extruded), and AC (as-hot compressed). The creep resistance was as follows: AH > AE > AC, although AC exhibited the best mechanical properties. AH primarily exhibited cross-slip and twinning. AE displayed cross-slip and twinning for coarse non-dynamically recrystallized (non-DRXed) grains, and basal <a> slip and pyramidal <c + a> slip for fine DRXed grains. AC had basal <a> slip and pyramidal <c + a> slip. The highest creep resistance for AH resulted from the stable solid solution strengthening and the interplay between twinning and cross-slip. In contrast, AC, with the lowest creep resistance, experienced an accelerated creep strain due to precipitate coarsening and frequent grain boundary sliding. A combination of pipe diffusion-controlled and grain boundary diffusion-controlled slip contributed 57% to the steady creep rate. This work provides a considerable insight for the application of Mg alloys as thermally conductive structural components.http://www.sciencedirect.com/science/article/pii/S223878542402742XMg alloysMicrostructureMechanical propertyCreep resistance |
| spellingShingle | Haifeng Liu Ming-Chun Zhao Zhenyu Xiao Ying-Chao Zhao Hiromi Nagaumi Taku Sakai Andrej Atrens Xuyue Yang Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditions Journal of Materials Research and Technology Mg alloys Microstructure Mechanical property Creep resistance |
| title | Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditions |
| title_full | Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditions |
| title_fullStr | Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditions |
| title_full_unstemmed | Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditions |
| title_short | Insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute Mg–Mn–Zn alloys in varied processing conditions |
| title_sort | insight on the mechanism by which microstructural characteristic influenced creep resistance of dilute mg mn zn alloys in varied processing conditions |
| topic | Mg alloys Microstructure Mechanical property Creep resistance |
| url | http://www.sciencedirect.com/science/article/pii/S223878542402742X |
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