Abstract：The abnormal microstructure and mechanical property at different temperature of 50 steel slab have been analysed. The result showed that rapid and inhomogenous cooling will cause sharp-edged and protuberant ferrite structure, which can weaken the grain boundaries and induce stronger structural stress and thermal stress. The brittle zones at high temperature and low temperature are existed at 700 and 300 ℃, respectively, in which the fracture can be seen probably with moving the slabs. By applying suitable stack cooling and improving the proportion of hot delivery and hot charging of continuous casting slab, the risks of fracture can be reduced effectively.
罗志文. 50钢铸坯冷却过程断裂分析[J]. 中国冶金, 2017, 27(3): 40-44.
LUO Zhi-wen. 5Fracture analysis in cooling process of 50 steel slab. China Metallurgy, 2017, 27(3): 40-44.
2017, Vol. 27 
