4控轧控冷工艺对低碳高强度汽车板组织和性能的影响-北科大田允-必读.pdf

2007 年全国塑性加工理论与新技术学术研讨会 2007 年 5 月 沈阳 控轧控冷工艺对低碳高强度汽车板组织和性能的影响 1 1 1 1 2 2 2 田 允 ，赵征志 ，吴新朗 ，陈雨来 ，刘光明 ，代晓莉 ，熊爱明 （1.北京科技大学冶金工程研究院，北京 100083 ；2. 首钢技术研究院，北京 100041 ） 摘 要：对低碳高强度汽车板 510L 采用不同形变热处理工艺进行试验，分析了终轧温度和卷曲温度对实验钢力学性 能和微观组织的影响，和低碳高强度汽车板的强韧化机制。研究表明：降低终轧温度和卷曲温度可有效细化晶粒， 提高钢板的强度；适合本实验钢的工艺制度：终轧温度在 830～860℃，卷曲温度在 610～650℃；细晶强化是 510L 钢板的主要强化方式。 关键词：控轧控冷；力学性能；显微组织；强化 Effect of Controlled Rolling and Controlled Cooling on Microstructure and Mechanical Properties of High Strength Low Carbon Automobile Steel Plates 1 1 1 1 2 Tian Yun ,Zhao Zheng-zhi ,Wu Xin-lang ,Chen Yu-lai ,Liu Guang-ming ,Dai xiao-li2,Xiong Ai-ming2 (1. Research Institute of Metallurgy Engineering,University of Science and Technology Beijing,Beijing 100083;2. Shougang Research Institute of Technology, Shougang Group Corporation, Beijing 100041) Abstract: Controlled rolling and controlled cooling experiments have been carried out on a 510L steel in different schedules. The effects of finish rolling temperature and coiling temperature on the mechanical properties and microstructures of the steel were investigated, and strengthening mechanisms of high strength low carbon automobile steel plates were analyzed. The experiment results showed that with decreasing finish rolling temperature or coiling temperature the ferrite grain size became finer and the strength of the steel increased; The schedules which are suitable for the tested steel are as the follows: controlling finish rolling temperature in the range of 830～860℃，controlling coiling temperature in the range of 610～ 650℃。Refinement strengthening