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选用添加钛、铌元素的超低碳微合金钢为对象,分别对其进行750、800和850℃,保温135 s的退火处理,研究3种退火温度对钢板再结晶晶粒形貌和析出相种类的影响,同时基于欧洲标准EN 10209:2013测试3种退火钢板的氢渗透值(TH),评价退火温度对钢板抗鳞爆性能的影响。结果表明:在压下率相同条件下,退火温度影响钢板的再结晶组织和析出相种类与数量,其中800℃时,试验钢板的再结晶晶粒细小均匀,形成了Mn S、Ti_4S_2C_2和TiC等析出相,其氢渗透值TH最大,即抗鳞爆性最好。
The ultra-low carbon microalloyed steel with addition of titanium and niobium was chosen as the object. The annealing treatment at 750, 800 and 850 ℃ for 135 s was carried out. The effects of three annealing temperatures on the recrystallization grain morphology and precipitated phase The influence of annealing temperature on the anti-scale-forming performance of the steel sheets was also evaluated based on the hydrogen permeation value (TH) of the three kinds of annealed steel sheets according to the European standard EN 10209: 2013. The results show that under the same reduction rate, the annealing temperature affects the recrystallization microstructure and the type and amount of precipitates. The recrystallized grains of the steel plate are fine and uniform at 800 ℃, forming Mn S, Ti 4 S 2 C 2 and TiC Precipitated phase, the maximum hydrogen permeability TH, anti-scale explosion best.