【摘要】 利用热膨胀法研究了C-Si-Mn系TRIP钢在两种静态条件下连续冷却转变时的相变规律,分析了冷却速度、奥氏体化工艺对组织的影响。结果表明:冷却速度低于15℃/s时试样发生铁素体相变,加快冷却速度后,发生贝氏体相变;与国标条件静态CCT曲线相比,模拟薄板坯连铸连轧条件静态CCT曲线中铁素体形成区域下移,贝氏体相变区域扩大,贝氏体转变开始温度相当,但贝氏体转变结束温度有所降低。更多还原

【Abstract】 The transformation of C-Si-Mn TRIP steel during continuous cooling in two static conditions was studied by dilatometry.The effects of cooling rate and austenitizing process on the microstructure were analyzed.The ferrite transformed when the cooling rate was below 15℃/s,bainite transformed when the cooling rate increased.Ferrite transformation region in static CCT curves of simutating TSCR(thin slab casting and rolling) process was lower than that of national standard,and bainite transformation region was wider,bainite transformation starting temperature was similar,bainite transformation finish temperature was lower.更多还原