| 铝合金热塑性变形流动应力及其数学模型 |
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| 引用本文： | 张少军 周纪华. 铝合金热塑性变形流动应力及其数学模型[J]. 北京科技大学学报, 1996, 18(3): 263-266 |
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| 作者姓名： | 张少军 周纪华 |
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| 作者单位： | 北京科技大学机械工程学院 |
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| 摘 要： | 采用恒应变速率凸轮式压缩试验机，测定了４种铝合金材料在热状态下的流动应力，分析了应变率，应变速率及变形温度对流动应力的影响规律，通过对多种结构型式流动和数学模型的回归分析比较，确定了计算精度较高，结构型式较简单，适合于现场计算机在线控制和工程计算的数学模型。
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| 关 键 词： | 铝合金 塑性变形 流动应力 数学模型 热塑性变形 |
Mathematical Model on Flow Stress of Aluminium Alloys in Hot Plastic Deformation |
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| Zhang Shaojun, Zhou Jihua, Gao Yongsheng, Lun Yixin, Wang Zaiying. Mathematical Model on Flow Stress of Aluminium Alloys in Hot Plastic Deformation[J]. Journal of University of Science and Technology Beijing, 1996, 18(3): 263-266 |
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| Authors: | Zhang Shaojun Zhou Jihua Gao Yongsheng Lun Yixin Wang Zaiying |
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| Abstract: | Using cam-type compression testing machine, four kinds of aluminium-alloy materials are tested in hot process at constant strain rate. The affects of strain, strain rate and deformation temperature on flow stress are analysed. By regressing,comparing and analysing various form of mathematical models of flow stress, one model with higher calculation accuracy, simpler form and more suitable for on-line computer control and engineering calculation is determined. |
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| Keywords: | aluminium alloys plastic deformation flow stress mathematical model |
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