| Hot deformation behavior and flow stress model of F40MnV steel |
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| 作者姓名： | 王进 陈军 赵震 阮雪榆 |
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| 作者单位： | National Die and Mold CAD Engineering Research Center Shanghai Jiaotong University，National Die and Mold CAD Engineering Research Center，Shanghai Jiaotong University，National Die and Mold CAD Engineering Research Center，Shanghai Jiaotong University，National Die and Mold CAD Engineering Research Center，Shanghai Jiaotong University，Shanghai 200030，China，Shanghai 200030，China，Shanghai 200030，China，Shanghai 200030，China |
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| 摘 要： | Single hit compression tests were performed at 1 223-1 473 K and strain rate of 0.1-10 s-1 to study hot deformation behavior and flow stress model of F40MnV steel. The dependence of the peak stress, initial stress, saturation stress, steady state stress and peak stain on Zener-Hollomon parameter were obtained. The mathematical models of dynamic recrystallization fraction and grain size were also obtained. Based on the tested data, the flow stress model of F40MnV steel was established in dynamic recovery region and dynamic recrystallization region, respectively. The results show that the activation energy for dynamic recrystallization is 278.6 kJ/mol by regression analysis. The flow stress model of F40MnV steel is proved to approximate the tested data and suitable for numerical simulation of hot forging.
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| 关 键 词： | 热变形行为 F40MnV金属 动力恢复 再结晶技术 |
| 收稿时间： | 8 May 2006 |
| 修稿时间： | 2006-05-08 |
Hot deformation behavior and flow stress model of F40MnV steel |
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| Wang Jin , Chen Jun , Zhao Zhen and Ruan Xue-yu.Hot deformation behavior and flow stress model of F40MnV steel[J].Journal of Central South University of Technology,2007,14(1):19-23. |
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| Authors: | Wang Jin Chen Jun Zhao Zhen and Ruan Xue-yu |
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| Affiliation: | National Die and Mold CAD Engineering Research Center, Shanghai Jiaotong University, Shanghai 200030, China |
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| Abstract: | Single hit compression tests were performed at 1 223-1 473 K and strain rate of 0.1-10 s-1 to study hot deformation behavior and flow stress model of F40MnV steel. The dependence of the peak stress, initial stress, saturation stress, steady state stress and peak stain on Zener-Hollomon parameter were obtained. The mathematical models of dynamic recrystallization fraction and grain size were also obtained. Based on the tested data, the flow stress model of F40MnV steel was established in dynamic recovery region and dynamic recrystallization region, respectively. The results show that the activation energy for dynamic recrystallization is 278.6 kJ/mol by regression analysis. The flow stress model of F40MnV steel is proved to approximate the tested data and suitable for numerical simulation of hot forging. |
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| Keywords: | microalloyed forging steel flow stress dynamic recovery dynamic recrystallization Zener-Hollomon parameter |
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