| 镁合金 AZ40M 再结晶晶粒尺寸与硬度模型研究 |
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| 引用本文： | 朱雄,夏华,胡冬,王姝俨.镁合金 AZ40M 再结晶晶粒尺寸与硬度模型研究[J].精密成形工程,2014,6(5):76-79. |
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| 作者姓名： | 朱雄 夏华 胡冬 王姝俨 |
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| 作者单位： | 重庆理工大学 材料科学与工程学院, 重庆 400054;重庆理工大学 材料科学与工程学院, 重庆 400054;重庆理工大学 材料科学与工程学院, 重庆 400054;重庆理工大学 材料科学与工程学院, 重庆 400054 |
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| 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,通过金相法观测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。
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| 关 键 词： | AZ40M镁合金 再结晶晶粒尺寸 硬度模型 |
| 收稿时间： | 2014/7/10 0:00:00 |
| 修稿时间： | 9/1/2014 12:00:00 AM |
Recrystallized Grain Size and Hardness Model of AZ40M Alloy |
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| ZHU Xiong,XIA Hu,HU Dong and WANG Shu-yan.Recrystallized Grain Size and Hardness Model of AZ40M Alloy[J].Journal of Netshape Forming Engineering,2014,6(5):76-79. |
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| Authors: | ZHU Xiong XIA Hu HU Dong and WANG Shu-yan |
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| Affiliation: | College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China;College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China;College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China;College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China |
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| Abstract: | Objective To study the effects of experimental temperatures and strain rates on the recrystallized grain size and hardness of the AZ40 M 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 AZ40 M 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 AZ40 M alloy. |
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| Keywords: | AZ40M alloy recrystallized grain size hardness model |
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