The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca composite
To obtain the Tip with different aspect ratios, the Tip/Mg-5Zn-0.3Ca composite prepared by semi-solid stir casting was subjected to extrusion at 220℃, 180℃, and 140℃, respectively. Then, the effect of the Tip’s aspect ratio on the microstructure, mechanical properties, work hardening and softening b...
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KeAi Communications Co., Ltd.
2025-06-01
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| Series: | Journal of Magnesium and Alloys |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956724002305 |
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| author | Cui-ju Wang Jin-Kai Zhang Kai-bo Nie Chao Xu Kun-kun Deng |
| author_facet | Cui-ju Wang Jin-Kai Zhang Kai-bo Nie Chao Xu Kun-kun Deng |
| author_sort | Cui-ju Wang |
| collection | DOAJ |
| description | To obtain the Tip with different aspect ratios, the Tip/Mg-5Zn-0.3Ca composite prepared by semi-solid stir casting was subjected to extrusion at 220℃, 180℃, and 140℃, respectively. Then, the effect of the Tip’s aspect ratio on the microstructure, mechanical properties, work hardening and softening behaviors of Tip/Mg-5Zn-0.3Ca composites was investigated. The results indicated that the Tip could be elongated obviously after low-temperature extrusion, and the aspect ratio of which would reach to 13.7:1 as the extrusion temperature deceased to 140℃. Then the “Ti/Mg” layer-like structure was formed in the Tip/Mg-5Zn-0.3Ca composite. Accompanied with the elongation of Tip, the dynamic recrystallized grains and dynamic precipitates were both refined significantly, however, the dynamic recrystallization rate changed a little. The elongated Tip endowed the Tip/Mg-5Zn-0.3Ca composites with better matching of strength and toughness without the sacrifice of elongation and bending strain. Both the work hardening rate and softening rate of Tip/Mg-5Zn-0.3Ca composites increased with the increasing aspect ratio of Tip. The formation of “Ti/Mg” layer-like structure contributed to the redistribution of strain from large aggregations to a network-like distribution, which effectively suppresses the initiation and propagation of micro-cracks, thus enhancing the plasticity of the Tip/Mg-5Zn-0.3Ca composites. |
| format | Article |
| id | doaj-art-022b004fca914d07bd9abd7d2c96ce7f |
| institution | Kabale University |
| issn | 2213-9567 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj-art-022b004fca914d07bd9abd7d2c96ce7f2025-08-20T03:50:31ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672025-06-011362752276810.1016/j.jma.2024.06.028The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca compositeCui-ju Wang0Jin-Kai Zhang1Kai-bo Nie2Chao Xu3Kun-kun Deng4Shanxi Key laboratory of advanced magnesium-based materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR ChinaShanxi Key laboratory of advanced magnesium-based materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR ChinaShanxi Key laboratory of advanced magnesium-based materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR ChinaSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR ChinaShanxi Key laboratory of advanced magnesium-based materials, College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China; Corresponding author.To obtain the Tip with different aspect ratios, the Tip/Mg-5Zn-0.3Ca composite prepared by semi-solid stir casting was subjected to extrusion at 220℃, 180℃, and 140℃, respectively. Then, the effect of the Tip’s aspect ratio on the microstructure, mechanical properties, work hardening and softening behaviors of Tip/Mg-5Zn-0.3Ca composites was investigated. The results indicated that the Tip could be elongated obviously after low-temperature extrusion, and the aspect ratio of which would reach to 13.7:1 as the extrusion temperature deceased to 140℃. Then the “Ti/Mg” layer-like structure was formed in the Tip/Mg-5Zn-0.3Ca composite. Accompanied with the elongation of Tip, the dynamic recrystallized grains and dynamic precipitates were both refined significantly, however, the dynamic recrystallization rate changed a little. The elongated Tip endowed the Tip/Mg-5Zn-0.3Ca composites with better matching of strength and toughness without the sacrifice of elongation and bending strain. Both the work hardening rate and softening rate of Tip/Mg-5Zn-0.3Ca composites increased with the increasing aspect ratio of Tip. The formation of “Ti/Mg” layer-like structure contributed to the redistribution of strain from large aggregations to a network-like distribution, which effectively suppresses the initiation and propagation of micro-cracks, thus enhancing the plasticity of the Tip/Mg-5Zn-0.3Ca composites.http://www.sciencedirect.com/science/article/pii/S2213956724002305TipParticle reinforced magnesium matrix compositesWork hardening and softening behaviorLaminar-like configuration |
| spellingShingle | Cui-ju Wang Jin-Kai Zhang Kai-bo Nie Chao Xu Kun-kun Deng The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca composite Journal of Magnesium and Alloys Tip Particle reinforced magnesium matrix composites Work hardening and softening behavior Laminar-like configuration |
| title | The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca composite |
| title_full | The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca composite |
| title_fullStr | The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca composite |
| title_full_unstemmed | The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca composite |
| title_short | The work hardening and softening behavior of spherical Tip/Mg-5Zn-0.3Ca composite |
| title_sort | work hardening and softening behavior of spherical tip mg 5zn 0 3ca composite |
| topic | Tip Particle reinforced magnesium matrix composites Work hardening and softening behavior Laminar-like configuration |
| url | http://www.sciencedirect.com/science/article/pii/S2213956724002305 |
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