| 贝氏体组织细化的RPC工艺参数优化 |
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| 引用本文： | 王学敏,杨善武,尚成嘉,贺信莱,韩文海.贝氏体组织细化的RPC工艺参数优化[J].北京科技大学学报,2002,24(2):173-176,180. |
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| 作者姓名： | 王学敏 杨善武 尚成嘉 贺信莱 韩文海 |
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| 作者单位： | 北京科技大学材料科学与工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);1998061507; |
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| 摘 要： | 利用热模拟技术研究了不同弛豫-析出-控制相变(RPC)工艺对含Nb,Ti低碳微合金钢最终组织的影响,结合半定量金相统计、电镜观察及EBSD技术分析了弛豫过程晶体缺陷组态与析出变化及相互作用规律.结果表明,经RPC工艺处理后,试验钢组织得到了有效的细化,主要为超细的贝氏体马氏体复合组织,当变形量增加,组织细化效果较好,出现最佳效果的弛豫时间缩短.终轧温度升高,细化效果减弱.从综合效果来看,当工艺参数的选取可以使弛豫析出速度与位错多边形化演变速度相匹配时,细化效果最佳.
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| 关 键 词： | 弛豫析出 RPC技术 组织细化 变形温度 变形量 |
RPC Processing Optimizing to Refine Bainite |
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| WANG Xuemin,SHANG Chengjia,YANG Shanwu,HE Xinlai,HAN Wenhai Materials Science and Engineering of School,UST Beijing,Beijing ,China.RPC Processing Optimizing to Refine Bainite[J].Journal of University of Science and Technology Beijing,2002,24(2):173-176,180. |
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| Authors: | WANG Xuemin SHANG Chengjia YANG Shanwu HE Xinlai HAN Wenhai Materials Science and Engineering of School UST Beijing Beijing China |
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| Institution: | WANG Xuemin,SHANG Chengjia,YANG Shanwu,HE Xinlai,HAN Wenhai Materials Science and Engineering of School,UST Beijing,Beijing 100083,China |
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| Abstract: | The influence of Relaxation-Precipitation-Controlling Transformation(RPC) technique on the microstructure of low carbon steels was studied by thermal simulation. The results indicated that the ultra- fine bainite/martensite composite microstructure was obtained. With the strain increasing the refinement was promoted. As the final rolling temperature increases the refinement was hindered. When the precipitation speed during relaxing is comparable to the dislocation evolution rate, the best processing is obtained. |
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| Keywords: | precipitation RPC technique microstructure refining deformation temperature' strain |
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