| 应变速率对镁合金压缩变形性能的影响 |
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| 引用本文： | 曹韩学,龙思远,廖慧敏. 应变速率对镁合金压缩变形性能的影响[J]. 机械工程材料, 2006, 30(11): 4-6,9 |
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| 作者姓名： | 曹韩学 龙思远 廖慧敏 |
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| 作者单位： | 重庆大学机械工程学院,重庆,400030;重庆市镁合金材料工程技术研究中心,重庆,400030;重庆大学机械工程学院,重庆,400030 |
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| 摘 要： | 采用圆柱形试样等温（573K）压缩试验方法对不同应变速率下AM60B镁合金压缩变形行为进行了研究，采用数理统计方法建立了573K时AM60B镁合金不同应变速率下塑性变形的本构模型。结果表明：AM60B镁合金的流变应力随着应变速率的升高而增大，塑性变形率随着应变速率的升高而降低；建立的本构模型能充分反映不同应变速率对其塑性变形过程的影响规律。
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| 关 键 词： | 镁合金 压缩变形 应变速率 本构模型 |
| 文章编号： | 1000-3738（2006）11-0004-03 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2005-10-172005-12-15 |
The Influence of Strain Rates on Compressive Deformation Process of Magnesium |
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| CAO Han-xue,LONG Si-yuan,LIAO Hui-min. The Influence of Strain Rates on Compressive Deformation Process of Magnesium[J]. Materials For Mechanical Engineering, 2006, 30(11): 4-6,9 |
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| Authors: | CAO Han-xue LONG Si-yuan LIAO Hui-min |
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| Affiliation: | 1. Chongqing University, Chongqing 400030, China; Chongqing Engineering Research Center for Magnesium Alloys, Chongqing 400030,China |
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| Abstract: | The deformation behaviors of AM60B magnesium alloy at different strain rates were investigated by way of compressing columniform cast ingots at 573 K. It was found that the flow stress raises along with the strain rate increasing as well as the compression ratio decreases. The compressive deformation constitutive equation of AM60B Mg alloy at different strain rates was established by means of mathematical statistics. And the experiments indicate that the constitutive equation can describe the compressive deformation rules of AM60B Mg alloy at different strain rates precisely. |
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| Keywords: | magnesium alloy compressive deformation strain rate constitutive equation |
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