| 铌-钛微合金化高强钢连续冷却的相变规律 |
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| 引用本文： | 惠亚军,于洋,王畅,王林,陈斌,陈瑾.铌-钛微合金化高强钢连续冷却的相变规律[J].钢铁研究学报,2014,26(12):42-46. |
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| 作者姓名： | 惠亚军 于洋 王畅 王林 陈斌 陈瑾 |
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| 作者单位： | 首钢技术研究院薄板研究所;首钢迁安钢铁有限责任公司技术质量部 |
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| 摘 要： | 利用Gleeble 3500热模拟试验机研究了铌-钛微合金化试验钢在变形与未变形条件下的连续冷却相变规律。研究结果表明:试验钢在2~50℃/s的较大冷速范围内均可获得贝氏体组织,且随着冷却速度的增加,组织中粒状贝氏体的量下降,板条贝氏体的量增加;同时变形促进相变,有利于奥氏体中新相的形成。用热膨胀法建立了试验钢静态与动态条件下的连续冷却转变(CCT)曲线。
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| 关 键 词： | 铌-钛微合金化钢 高强钢 连续冷却相变 CCT曲线 |
Phase Transformation Rule of a Nb-Ti Microalloyed High Strength Steel During Continuous Cooling |
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| HUI Ya-jun,YU Yang,WANG Chang,WANG Lin,CHEN Bin,CHEN Jin.Phase Transformation Rule of a Nb-Ti Microalloyed High Strength Steel During Continuous Cooling[J].Journal of Iron and Steel Research,2014,26(12):42-46. |
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| Authors: | HUI Ya-jun YU Yang WANG Chang WANG Lin CHEN Bin CHEN Jin |
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| Affiliation: | 1. Sheet Metal Research Institute, Shougang Research Institute of Technology, Beijing 100043, China ;2. Technology and Quality Division, Shougang Qian??an Iron and Steel Co. , Ltd. , Qian??an 064404, Hebei, China |
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| Abstract: | Phase transformation rule of a Nb-Ti microalloyed high strength steel with or without deformation during continuous cooling was studied by means of Gleeble 3500 thermal-mechanical simulator. The results show that bainite can be obtained during a wide cooling rate range from 2 to 50??/s. The amount of granular bainite decreases, while the amount of lath bainite increases with the increase of cooling rate. Deformation promotes new phase transformation in austenite. Thermal expansion method was adopted to obtain the continuous cooling transformation curves under deformation and no-deformation conditions. |
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| Keywords: | Nb-Ti microalloyed high strength steel continuous cooling transformation CCT curve |
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