【作者】 赵慧； 王学敏； 张小帆； 郑超超； 高磊；

【Author】 Zhao Hui;Wang Xuemin;Zhang Xiaofan;Zheng Chaochao;Gao Lei;School of Materials Science and Engineering,University of Science and Technology Beijing;

【机构】 北京科技大学材料科学与工程学院；

【摘要】 利用扫描电镜(SEM),电子背散射衍射分析技术(EBSD),X射线衍射(XRD)研究不同回火温度对低碳贝氏体钢组织和性能的影响。结果表明,回火温度对试验钢的屈服强度和伸长率的影响更为明显,而对抗拉强度的影响相对较小;未经回火时,试验钢的轧态组织为细小的板条贝氏体和M/A岛,随着回火温度的增加,贝氏体板条逐渐合并在一起,680℃回火1h后产生大量残余奥氏体,可获得良好的综合力学性能。更多还原

【Abstract】 Effect of different tempering temperatures on microstructure and properties of Low Carbon Bainitic Steel was investigated by scanning electron microscopy(SEM), electron back scatter diffraction(EBSD),and X-Ray Diffraction(XRD).The results show that tempering temperature has considerable influence on yield strength and the elongation of the steel, but the influence on the tensile strength is not obvious. The main microstructure in the steel is lath bainite and M/A before tempering. With increasing the tempering temperatures, the bainitic lath can gradually merge. the microstructure generates a larger number of retained austenite after tempering at 680℃ for 1 hour, the test steel plate can gain favorable comprehensive mechanical properties.更多还原