| 采用控轧控冷工艺试制X100管线钢的研究 |
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| 引用本文： | 周民,;李德成.采用控轧控冷工艺试制X100管线钢的研究[J].中国冶金,2009,19(6):1-1. |
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| 作者姓名： | 周民 ;李德成 |
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| 作者单位： | 1.东北大学轧制技术及连轧自动化国家重点实验室,辽宁 沈阳110004；2.山东省冶金设计院有限公司,山东 莱芜 271104 |
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| 基金项目： | 十一五国家科技支撑计划资助项目（2006BAE03A08） |
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| 摘 要： | 在实验室采用控轧控冷工艺轧制X100管线钢，并利用金相显微镜、扫描电镜、透射电镜等研究了其力学性能、显微组织、EBSD及析出物，实验结果表明，采用控轧控冷两阶段轧制工艺，在终轧温度为806 ℃，终冷温度在415 ℃，冷却速度为18.6 ℃/s时，实验钢综合性能较终冷温度为491 ℃时良好。经EBSD分析该实验钢大角度晶界百分比含量达78.8%，透射电镜下观察该实验钢析出物随尺寸增大形状规则化，且随尺寸增大，Nb/Ti降低。
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| 关 键 词： | 贝氏体 控轧控冷 终冷温度 析出物 |
Research on Trial-Production of X100 Pipeline Steel by TMCP |
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| ZHOU Min,LI De cheng,DU Lin xiu,LIU Xiang hua.Research on Trial-Production of X100 Pipeline Steel by TMCP[J].China Metallurgy,2009,19(6):1-1. |
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| Authors: | ZHOU Min LI De cheng DU Lin xiu LIU Xiang hua |
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| Affiliation: | 1. State Key Laboratory of Rolling Technology and Automation, Northeastern University, Shenyang 110004,
Liaoning, China; 2. Shandong Province Metallurgy Design Ltd., Laiwu 271104, Shandong, China |
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| Abstract: | X100 pipeline steels were roiled by thermal mechanical controlling process（TMCP）,and then the mechanical properties, microstructure,EBSD and precipitations were investigated by means of metalloscope, scanning electron microscope, transmission electron microscope, etc. The testing steels have better comprehensive mechanical properties than the testing steel that the finished cooling temperature is at 491 ℃, when the finished roiling temperature is at 806℃ ,finished cooling temperature is at 415 ℃ and cooling velocity is 18.6℃/s by TMCP. For the testing steel by EBSD analysis, percentage of grain boundaries with large angle is up to 78.8%. With size increasing, the morphology of precipitations is regular. As the size of precipitations increasing, Nb/Ti is down. |
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| Keywords: | bainite TMCP finished cooling temperature precipitations |
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