Change in microstructures and mechanical properties during annealing of AZ31F magnesium alloy multi-directionally forged under decreasing temperature conditions
Hot extruded AZ31F magnesium alloy was multi-directionally forged (MDFed) to 6 passes (a cumulative strain of ΣΔε=4.8) under decreasing temperature conditions, and then the specimens MDFed to 6 passes were annealed at temperatures ranging from 373 to 623 K. The as-MDFed specimen possessed a weak (00...
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| Veröffentlicht in: | Journal of Japan Institute of Light Metals 2019/04/30, Vol.69(4), pp.228-234 |
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| container_title | Journal of Japan Institute of Light Metals |
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| creator | Ikeda, Mitsushi Kashihara, Keizo Aoba, Tomoya Kobayashi, Masakazu Miura, Hiromi |
| description | Hot extruded AZ31F magnesium alloy was multi-directionally forged (MDFed) to 6 passes (a cumulative strain of ΣΔε=4.8) under decreasing temperature conditions, and then the specimens MDFed to 6 passes were annealed at temperatures ranging from 373 to 623 K. The as-MDFed specimen possessed a weak (0001) texture, whereas the MDFed specimen annealed at 623 K almost random orientation. Average grain size and hardness before and after static recrystallization indicated 0.6 µm and 85.1Hv, and 3.2 µm and 58.5Hv, respectively. The relationship between hardness (Hv) and grain size (d) in both as-MDFed and as-annealed specimens followed the Hall–Petch relation, which was expressed by a unified equation of Hv=38.7+36d −1/2。 |
| doi_str_mv | 10.2464/jilm.69.228 |
| format | Article |
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The as-MDFed specimen possessed a weak (0001) texture, whereas the MDFed specimen annealed at 623 K almost random orientation. Average grain size and hardness before and after static recrystallization indicated 0.6 µm and 85.1Hv, and 3.2 µm and 58.5Hv, respectively. 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Japan Inst. Light Metals</addtitle><description>Hot extruded AZ31F magnesium alloy was multi-directionally forged (MDFed) to 6 passes (a cumulative strain of ΣΔε=4.8) under decreasing temperature conditions, and then the specimens MDFed to 6 passes were annealed at temperatures ranging from 373 to 623 K. The as-MDFed specimen possessed a weak (0001) texture, whereas the MDFed specimen annealed at 623 K almost random orientation. Average grain size and hardness before and after static recrystallization indicated 0.6 µm and 85.1Hv, and 3.2 µm and 58.5Hv, respectively. 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The relationship between hardness (Hv) and grain size (d) in both as-MDFed and as-annealed specimens followed the Hall–Petch relation, which was expressed by a unified equation of Hv=38.7+36d −1/2。</abstract><cop>Tokyo</cop><pub>The Japan Institute of Light Metals</pub><doi>10.2464/jilm.69.228</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Annealing Extrusion Grain size Hardness magnesium alloy Magnesium alloys Magnesium base alloys Mechanical properties mechanical property multi-directional forging Recrystallization texture |
| title | Change in microstructures and mechanical properties during annealing of AZ31F magnesium alloy multi-directionally forged under decreasing temperature conditions |
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