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| 镁合金 AZ40M 再结晶晶粒尺寸与硬度模型研究 |
| Recrystallized Grain Size and Hardness Model of AZ40M Alloy |
| Received:July 10, 2014 Revised:September 01, 2014 |
| DOI：10. 3969 /j. issn. 1674-6457. 2014. 05. 013 |
| 中文关键词: AZ40M 镁合金 再结晶晶粒尺寸 硬度模型 |
| 英文关键词: AZ40M alloy recrystallized grain size hardness model |
| 基金项目: |
| Author Name | Affiliation | | ZHU Xiong | College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China | | XIA Hua | College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China | | HU Dong | College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China | | WANG Shu-yan | College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China |
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| 中文摘要: |
| 目 的 研究变形温度及变形速率对镁合金 AZ40M 再结晶 晶 粒尺寸以 及硬度的 影响。 方法在 gleeble-1500D 热模拟机上进行热 物 理模拟压缩 实验, 变形 温度为 250 ~ 400 ℃ , 变形 速率为0. 001 ~ 1 s-1 , 通过金相法??AZ40M 镁合金在不同 变形条件下的组织形貌, 采用 维氏硬度计测出镁合金热变形后的硬度值。 结果 当 升高变形温度或降低变形速率时, 材料的晶 粒尺寸增大且硬度减小。 结论 得出 了 再结晶晶粒尺寸的变化规律, 建立了 AZ40M 镁合金的晶粒尺寸与 硬度的关系模型。 |
| 英文摘要: |
| Objective To study the effects of experimental temperatures and strain rates on the recrystallized grain size and hardness of the AZ40M alloy. Methods The hot compression experiments were carried out on the gleeble-1500 thermal simulation machine. The experimental temperatures and strain rates were investigated in the temperature range of 250 and 400 ℃ and the strain rate range of 0. 01 and 1 s-1 . Metallographic observation was used to analyze the microstructure morphology of AZ40M alloy under different deformation conditions, and the hardness values of magnesium alloy after hot deformation were measured using Vivtorinox hardness meter. Results The recrystallized grain size increased significantly and the hardness decrease significantly at higher deformation temperature or lower strain rate. Conclusion The variation rule of recrystallized grain size was obtained. The relation model of recrystallized grain size and hardness was built for AZ40M alloy. |
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