Study on Microstructure Refinement of Vanadium and Nitrogen Microalloyed Low Carbon Bainitic Steel

摘要：

In this paper the effect of relaxation treatment after finish rolling on microstructure and mechanical properties has been investigated for a vanadium and nitrogen microalloyed low carbon bainitic steel. Finer lath bainite microstructure can be obtained in the plate with relaxation. The results of quantitative statistics show that in the plate without relaxation, 80％ of the total bainite lath bundles are in the range 5-15μm in length and 3-13μm in width, while in the plate with relaxation 80％ of the total bundles are in the range 3-9μm in length and 1-7μm in width. The mechanical properties show that the plate with relaxation has higher impact energy, yield strength and hardness than the plate without relaxation, also the comprehensive performance after tempered at 650℃ is superior to the plate without relaxation.

关键词： low carbon bainitic steel microstructure refinement V-N Microalloying

作者: GAO Fei WANG Rui-zhen QIAN Tian-cai

作者单位: China Central Iron and Steel Research Institute, Beijing 100081,China; University of Science and Tec China Central Iron and Steel Research Institute, Beijing 100081,China University of Science and Technology, Kunming 650093,China

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 503-506

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）