| 双相钢冲击拉伸变形行为本构方程的建立 |
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| 引用本文： | 周元鑫 夏源明. 双相钢冲击拉伸变形行为本构方程的建立[J]. 材料科学与工艺, 1997, 5(1): 72-76 |
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| 作者姓名： | 周元鑫 夏源明 |
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| 作者单位： | 中国科学技术大学近代力学系 |
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| 摘 要： | 利用旋转盘式冲击拉伸试验装置，对马氏体含量为３０％，４２％，４８％，５０％和６０％的２０Ｃｒ双相钢进行３个应变率的冲击拉伸试验，得到了这些材料在不同高应变率下 绝热应力应变曲线；发现２０Ｃｒ双相钢的屈服应力随马氏体的含量和应变率的增加而增加，且马氏体的含量对应变率的强化系数影响不大。
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| 关 键 词： | 双相钢 冲击拉伸 应变率效应 钢 |
Study of Mechanical Behavior of Dual Phase Steels under Tensile Impact |
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| Zhao Yuanxin Xia Yuanming Yang Baochang. Study of Mechanical Behavior of Dual Phase Steels under Tensile Impact[J]. Materials Science and Technology, 1997, 5(1): 72-76 |
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| Authors: | Zhao Yuanxin Xia Yuanming Yang Baochang |
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| Abstract: | A self-designed rotating circular disk tensile impact appratus was used to study the mechanical behavior of the dual phase steels(V m=30%,42%,48%,56% and 60%)in the strain rate range from 100s -1 to 1300s -1 .Complete stress-strain curves were obtained. The results show that the dual phase steels were hardened with increasing strain rate and the strain rate hardening coefficient is a constant at different V m.A one dimensional elastic-viscoplastic constitutive equation was derived and it gives good agreement with experiments. |
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| Keywords: | dual phase steel impact tensile strain rate effect |
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