卷取与平整工艺对Q350EWR1力学性能的影响
The Influence of Coiling and Smoothing Processes on the Mechanical Properties of Q350EWR1
耿云飞 1邢天庆 1高华 1杨玉厚 1郭隆 1魏梦麒 1陈彤1
作者信息
- 1. 河钢集团唐钢公司,河北 唐山 063016
- 折叠
摘要
利用光学显微镜、拉伸实验以及相变模拟软件对Q350EWR1高耐候热轧铁道用钢不同卷取温度和不同平整工艺下的显微组织、力学性能进行了观察分析.结果表明:该钢种在620℃以下卷取时,随着卷取温度的降低强度急剧升高,当卷取温度在620～660 ℃范围时,强度波动幅度较小,力学性能趋于稳定,不同温度下带钢强度与显微组织存在明显对应关系;热轧带钢经过平整工序后屈服强度升高,抗拉强度变化不明显.
Abstract
The microstructure and mechanical properties of Q350EWR1 high weather resistant hot-rolled railway steel under different coiling temperatures and smoothing processes were observed and analyzed using optical microscopy,tensile experiments,and phase transformation simulation software.The results showed that the strength of the steel increased sharply with the decrease of coiling temperature below 620 ℃.When the coiling temperature was in the range of 620～660 ℃,the strength fluctuation amplitude was small,and the mechanical properties tended to stabilize.There was a clear corresponding relationship between the strength of the strip steel and the microstructure at different temperatures.After the leveling process,the yield strength of hot-rolled strip steel increases,but the change in tensile strength is not significant.
关键词
卷取温度/平整工艺/力学性能Key words
coiling temperature/temper-rolling processes/mechanical properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据