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摘要：
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采用Formaster-Digital全自动相变仪测定了船板钢E36加热时的实际相变温度Ac1和Ac3,以及冷却时的实际相变温度Ar1和Ar3,同时测定了试样在不同冷却速度下的相变点,根据相变点绘制出了E36钢的奥氏体连续冷却转变曲线(CCT曲线)。通过分析不同冷却速度对E36钢的显微组织、晶粒度和硬度的影响,制定出了较合理的E36钢轧后控冷工艺:冷却速度5~10℃.s-1,终冷温度550℃左右,然后空冷。该控冷工艺,保证了室温主要组织为F+P,细化了铁素体(F)晶粒,同时保证了E36钢的硬度要求。
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By means of fully automatic phase transformation tester(Formaster-Digital),the actual phase transformation temperature when heating,i.e.,Ac1 and Ac3,and the actual phase transformation temperature when cooling,i.e.,Ar1 and Ar3,of ship plate steel E36 and phase transformation point of specimen at different cooling rate were measured.Based on phase transformation point,the continuous cooling transformation(CCT) curves of E36 were given.To analyze the effects of different cooling rate on microstructure,grain size and hardness of ship plate steel E36,more reasonable controlled cooling technology after rolling were established including cooling rate at 5~10℃·s-1,finish-cooling temperature at about 550 ℃,and then air cooling.The controlled cooling technology not only ensures that the main organization is F+P at room temperature,but also refines the ferrite grain(F),meanwhile ensures the hardness of ship plate steel E36.
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基金项目：
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国家自然科学基金(50765005);;
江西省自然科学基金(2007GZC1826);;
江西省教育厅资助项目
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作者简介：
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参考文献：
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[1]帅奇.浅谈我国船舶工业中厚板用钢的生产与营销实践[J].冶金信息导报,2005,(5):5-8.
[2]李国彬,皮昕宇.中厚板控制冷却的板形控制与实践[J].武钢技术,2006,44(5):1-4.
[3]王有铭,李曼云,韦光.钢材的控制轧制和控制冷却[M].北京:冶金工业出版社,1995.
[4]孙本荣,王有铭,陈瑛.中厚钢板生产[M].北京:冶金工业出版社,1993.
[5]唐荻.控轧控冷对DH36钢组织的影响及工艺参数优化[J],轧钢,2000,17(4):7-10.
[6]洪伯钧.武钢试生产B级船板[J],钢铁研究,1995,(4):10-13.
[7]小指军夫.控制轧制和控制冷却[M].北京:冶金工业出版社,2002.
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