Mn含量对热轧超低碳钛低合金钢组织与力学性能的影响
发布时间：2018-11-04 21:00
【摘要】：实验钢在传统C-Mn钢的基础上添加低合金元素Ti,通过调整钢中Mn元素含量,同时采用简便的控制轧制与控制冷却工艺,获得了良好的组织形态及纳米尺度析出物,从而在保证优良延伸性能的前提下大幅度提高了钢板的强度,显著降低了钢材成本。使用金相显微镜(OM)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对微观组织进行观察。结果表明:当实验钢Mn含量从1.05%(质量分数,下同)提高至1.5%,平均晶粒尺寸从6.4μm细化至5.2μm;基体中纳米尺度TiC的析出量明显增加;屈服强度、抗拉强度和断后伸长率分别提高了56.7,42.2MPa和1.2%,达到了558.7,662.2MPa和22.4%。
[Abstract]:On the basis of traditional C-Mn steel, the low alloy element Ti, was added to the experimental steel. By adjusting the content of Mn elements in the steel and adopting a simple controlled rolling and controlled cooling process, good microstructure and nano-scale precipitates were obtained. Therefore, the strength of steel plate is greatly increased and the cost of steel is reduced significantly on the premise of good extension property. Microstructure was observed by (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that when the Mn content of the experimental steel is increased from 1.05% (mass fraction) to 1.5 渭 m, the average grain size is refined from 6.4 渭 m to 5.2 渭 m, and the precipitation amount of nano-scale TiC in the matrix increases obviously. The yield strength, tensile strength and elongation after break were increased by 56.7 MPA and 1.2 MPA, respectively, and reached 558.7662.2MPa and 22.4MPa respectively.
【作者单位】： 东北大学轧制技术及连轧自动化国家重点实验室;
【基金】：国家科技支撑计划项目(2011BAE25B03)
【分类号】：TG142.1;TG335
[Abstract]:On the basis of traditional C-Mn steel, the low alloy element Ti, was added to the experimental steel. By adjusting the content of Mn elements in the steel and adopting a simple controlled rolling and controlled cooling process, good microstructure and nano-scale precipitates were obtained. Therefore, the strength of steel plate is greatly increased and the cost of steel is reduced significantly on the premise of good extension property. Microstructure was observed by (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that when the Mn content of the experimental steel is increased from 1.05% (mass fraction) to 1.5 渭 m, the average grain size is refined from 6.4 渭 m to 5.2 渭 m, and the precipitation amount of nano-scale TiC in the matrix increases obviously. The yield strength, tensile strength and elongation after break were increased by 56.7 MPA and 1.2 MPA, respectively, and reached 558.7662.2MPa and 22.4MPa respectively.
【作者单位】： 东北大学轧制技术及连轧自动化国家重点实验室;
【基金】：国家科技支撑计划项目(2011BAE25B03)
【分类号】：TG142.1;TG335
【参考文献】
相关期刊论文 前4条
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