| 钛微合金化X70管线钢动态CCT曲线研究 |
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| 引用本文： | 陈婷,徐光,李光强,肖爱达,罗丰.钛微合金化X70管线钢动态CCT曲线研究[J].钢铁研究,2009,37(6). |
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| 作者姓名： | 陈婷 徐光 李光强 肖爱达 罗丰 |
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| 作者单位： | 1. 武汉科技大学,钢铁及资源利用省部共建教育部重点实验室,湖北,武汉,430081
2. 湖南涟源钢铁(集团)公司,技术中心,湖南,娄底,417009 |
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| 摘 要： | 结合CSP短流程Ti微合金化X70管线钢的开发,用Gleeble-1500热模拟实验机测定了钛微合金化X70管线钢在不同冷却速度下的动态CCT曲线,分析和观察了对应的相变和组织.实验结果表明,钛微合金化X70管线钢控冷工艺对其组织有较大影响.钛微合金化X70管线钢中针状铁素体的比例随热变形后冷却速度的提高而增加,但冷却速度达到10℃/s以后,该比例变化不大.为了得到具有优良综合性能的X70管线钢,即得到以细小均匀的针状铁素体为主的理想组织,应将冷却速度控制在10℃/s左右.
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| 关 键 词： | 钛微合金化 X70管线钢 动态CCT曲线 针状铁素体 |
Study on dynamic CCT curve of Ti-microalloyed X70 pipeline steel |
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| CHEN Ting,XU Guang,LI Guang-qiang,XIAO Ai-da,LUO Feng.Study on dynamic CCT curve of Ti-microalloyed X70 pipeline steel[J].Research on Iron and Steel,2009,37(6). |
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| Authors: | CHEN Ting XU Guang LI Guang-qiang XIAO Ai-da LUO Feng |
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| Affiliation: | CHEN Ting1,XU Guang1,LI Guang-qiang1,XIAO Ai-da2,LUO Feng1(1.Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China,2.Technology Center of Lianyuan Iron and Steel Limited Company,Loudi 417009,China) |
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| Abstract: | During the development of Ti-microalloyed X70 pipeline steel,X70 dynamic CCT curve of Ti-microalloyed X70 pipeline steel at different cooling rates were measured by Gleeble-1500 thermal simulator,and corresponding transformation and microstructures were observed and analyzed.The test results showed that the volume fraction of acicular ferrite in the microstructure of Ti-microalloyed X70 pipeline steel increased obviously with the increase of cooling rate after thermo-mechanical deformation.However,the volum... |
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| Keywords: | Ti-microallpyed X70 pipeline steel dynamic CCT curve acicular ferrite |
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