| 工艺参数对高强度钢强度及韧性的影响 |
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| 引用本文： | 蓝慧芳,杜林秀,李卓,刘彦春,刘相华.工艺参数对高强度钢强度及韧性的影响[J].材料热处理学报,2009,30(1). |
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| 作者姓名： | 蓝慧芳 杜林秀 李卓 刘彦春 刘相华 |
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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. 酒泉钢铁公司钢研院新产品开发研究所,甘肃,嘉峪关,735100 |
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| 基金项目： | 国家科技支撑计划项目(2006BAE03A08) |
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| 摘 要： | 通过两阶段控制轧制加快速冷却,综合利用细晶强化、相变强化和析出强化等强化机制获得了满足了国标GB/T 16270-1996中Q550和Q620要求的高强度钢板。通过光学显微镜、扫描电镜和背散射衍射手段研究了终冷温度及终轧温度对力学性能的影响。结果表明,随终冷温度降低,屈服强度、抗拉强度和屈强比升高;终轧温度高不利于组织的细化,导致强度和韧性降低;随终冷温度升高,M-A岛的尺寸增大,体积分数增多,不利于韧性和塑性的提高。
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| 关 键 词： | 控轧控冷 高强度钢 组织细化 强韧化机制 |
Effect of processing parameters on strength and toughness of high-strength steel |
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| LAN Hui-fang,DU Lin-xiu,LI Zhuo,LIU Yan-chun,LIU Xiang-hua.Effect of processing parameters on strength and toughness of high-strength steel[J].Transactions of Materials and Heat Treatment,2009,30(1). |
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| Authors: | LAN Hui-fang DU Lin-xiu LI Zhuo LIU Yan-chun LIU Xiang-hua |
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| Affiliation: | 1.The State Key Laboratory of Rolling and Automation;Northeastern University;Shenyang 110004;China;2.Research Institute of Iron and Steel;Jiuquan Iron and steel Co Ltd;Jiayuguan 735100;China |
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| Abstract: | High strength steel which meets the requirement of Q550 and Q620 in GB/T 162701996 was obtained by two stage controlled rolling followed by accelerated cooling.With optical microscope,scanning electron microscope and electron backscattered diffraction(EBSD),the effect of finish cooling temperature and finish rolling temperature was evaluated.The result shows that yield strength,tensile strength,yield ratio and elongation increases with the decreasing of the finish cooling temperature and high finish rolling... |
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| Keywords: | thermomechanical processing high-strength steel microstructure refinement strengthening and toughening mechanism |
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