| 新型细晶强化中厚板Q460的控轧控冷工艺研究 |
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| 引用本文： | 陈永利,朱伏先,陈炳张,罗登,董立国.新型细晶强化中厚板Q460的控轧控冷工艺研究[J].宽厚板,2009,15(1):17-20. |
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| 作者姓名： | 陈永利 朱伏先 陈炳张 罗登 董立国 |
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| 作者单位： | 1. 东北大学
2. 湘潭钢铁集团有限公司 |
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| 摘 要： | 通过热轧试验，对比研究了终轧温度及轧后冷却速度对综合力学性能的影响，研究发现：降低终轧温度可以提高钢的屈服强度和抗拉强度，对韧性的影响不大，其强度的提高主要以沉淀强化为主；冷却速度越快，铁素体晶粒越细，钢的强度和韧性越高。但冷速超过15℃／s时会发生贝氏体相变，考虑到钢的综合性能，湘钢Q460热轧时应将终轧温度控制在840℃-860℃之间，冷却速度控制在10～15℃／s为最佳。
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| 关 键 词： | 中厚钢板 TMCP 晶粒细化 微合金化 |
Study on the TMCP for the New Type Q460 Grade Medium and Heavy Plate Strengthened with Fine Grain |
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| Chen Yongli,Zhu Fuxian,Chen Bingzhang,Luo Deng,Dong Liguo.Study on the TMCP for the New Type Q460 Grade Medium and Heavy Plate Strengthened with Fine Grain[J].Wide and Heavy Plate,2009,15(1):17-20. |
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| Authors: | Chen Yongli Zhu Fuxian Chen Bingzhang Luo Deng Dong Liguo |
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| Affiliation: | 1 Northeastern University;2 Xiangtan Iron and Steel Co.Ltd |
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| Abstract: | The paper comparatively studies the effect of finish rolling temperature and controlled cooling rate after rolling on the comprehensive mechanical properties through hot rolling trials and found that the yield strength and tensile strength of the steel could be increased by decreasing the finish rolling temperature,which has not much impact on the toughness.The strength was mainly improved by precipitation strengthening.The faster the cooling rate is,the finer the ferrite grain size will be.Thus the strengt... |
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| Keywords: | TMCP |
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