| 合金工具钢SKS51的动态再结晶行为 |
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| 引用本文： | 鲍思前,凌程,曾祥波,丁晋遥,郭存,张春远.合金工具钢SKS51的动态再结晶行为[J].特殊钢,2013,34(2):59-61. |
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| 作者姓名： | 鲍思前 凌程 曾祥波 丁晋遥 郭存 张春远 |
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| 作者单位： | 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室，武汉 430081 |
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| 基金项目： | 中国博士后科学基金资助项目，广东省重大科技专项 |
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| 摘 要： | 采用Gleeble-1500热模拟机单道次热压缩实验,研究了变形温度850～1 000℃和变形速率0.1～10s-1条件下合金工具钢SKS51(/%:0.78C、0.20Si、0.40Mn、1.5Ni、0.30Cr)的动态再结晶行为。实验结果显示SKS51钢动态再结晶在高的变形温度和低的变形速率情况下更易发生,回归法得出动态再结晶的变形激活能和应力指数分别为336.79 kJ/mol和4.26,并在此基础上建立了动态再结晶峰值应变(εp)、稳态应变(εs)及临界应变(εc)模型。
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| 关 键 词： | 合金工具钢SKS51 单道次热压缩实验 动态再结晶 真应力-真应变曲线 |
| 收稿时间： | 2012-10-25 |
Behavior of Dynamic Recrystallization of Alloy Tool Steel SKS51 |
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| Bao Siqian
,
Lin Cheng
,
Zeng Xiangbo
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Ding Jinyao
,
Guo Cun
,
Zhang Chunyuan.Behavior of Dynamic Recrystallization of Alloy Tool Steel SKS51[J].Special Steel,2013,34(2):59-61. |
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| Authors: | Bao Siqian Lin Cheng Zeng Xiangbo Ding Jinyao Guo Cun Zhang Chunyuan |
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| Affiliation: | Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081 |
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| Abstract: | The behavior of dynamic recrystallization of alloy tool steel SKS51 (/% : 0.78C, 0.20Si, 0.40Mn, 1.5Ni, 0.30Cr) in single pass hot compression test with strain rate 0.1 ~ 10 s-1 at 850-1 000 ℃ is studied by using Gleeble-1500 thermo-mechanical simulator. Results show that the dynamic recrystallization of steel SKS51 more easily occurs with lower strain rate at higher deformation temperature ； by regression analysis the deformation activation energy and stress exponent of dynamic recrystallization of steel are respectively 336. 97 kJ/mol and 4.26, and based on this foundation the peak strain(εp), stable strain (εs) and critical strain (εc) model are established. |
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| Keywords: | Alloy Tool Steel SKS51 Single Pass Hot Compression Test Dynamic Recrystallization True Stress- True Strain Curves |
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