| AM60镁合金的高温热压缩流变应力行为的研究 |
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| 引用本文： | 张昊,张辉,陈振华,傅定发,夏伟军. AM60镁合金的高温热压缩流变应力行为的研究[J]. 矿冶工程, 2006, 26(6): 92-94 |
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| 作者姓名： | 张昊 张辉 陈振华 傅定发 夏伟军 |
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| 作者单位： | 湖南大学,材料科学与工程学院,湖南,长沙,410082;湖南大学,材料科学与工程学院,湖南,长沙,410082;湖南大学,材料科学与工程学院,湖南,长沙,410082;湖南大学,材料科学与工程学院,湖南,长沙,410082;湖南大学,材料科学与工程学院,湖南,长沙,410082 |
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| 摘 要： | 在Gleeble-1500热模拟机上对AM60镁合金在应变速率为0.0005～0.5 s-1、变形温度为250～450 ℃条件下的流变应力行为进行了研究。结果表明: AM60镁合金热压缩变形的流变应力受到变形温度和应变速率的强烈影响, 可以用Zener-Hollomon参数的双曲正弦函数形式进行描述。在本实验条件下, AM60镁合金热压缩变形时的应力指数n为7.2, 其热变形激活能Q为190 kJ/mol。
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| 关 键 词： | AM60镁合金 热压缩变形 流变应力 热变形激活能 |
| 文章编号： | 0253-6099(2006)06-0092-03 |
| 收稿时间： | 2006-04-05 |
| 修稿时间： | 2006-04-05 |
Flow Stress Behavior of AM60 Magnesium Alloy during Hot Compression Deformation at Elevated Temperatures |
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| ZHANG Hao,ZHANG Hui,CHEN Zhen-hua,FU Ding-fa,XIA Wei-jun. Flow Stress Behavior of AM60 Magnesium Alloy during Hot Compression Deformation at Elevated Temperatures[J]. Mining and Metallurgical Engineering, 2006, 26(6): 92-94 |
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| Authors: | ZHANG Hao ZHANG Hui CHEN Zhen-hua FU Ding-fa XIA Wei-jun |
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| Affiliation: | College of Materials Science and Engineering, Hunan University, Changsha 410082, Hunan, China |
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| Abstract: | Hot compression tests of AM60 magnesium alloy were performed on Gleeble-1500 at strain rates ranging from 0.0005 s-1 to 0.5 s-1 and deformation temperature ranging from 250 ℃ to 450 ℃. The results show that the flow stress behaviors strongly depend on the deformation temperature and strain rate, which can be demonstrated by a Zener-hollomon parameter in the hyperbolic-sine-type equation during hot compression deformation. In the present study, the hot deformation activation energy is 190 kJ/mol and the stress exponent is 7.2 during the hot compression deformation of AM60 magnesium alloy. |
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| Keywords: | AM60 magnesium alloy hot compression deformation flow stress deformation activation energy |
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