机构地区: 东北大学材料与冶金学院轧制技术及连轧自动化国家重点实验室
出 处: 《特殊钢》 2010年第2期48-50,共3页
摘 要: 通过热模拟试验研究了冷却速度(0.5~35℃/s)和变形量(0.3~0.6)对X100管线钢(%:0.06C、0.23Si、1.90Mn、0.005P、0.000 3S、0.28Mo、0.25 Ni、0.23Cr、0.05Nb、0.02Ti、0.20Cu、0.025Al)组织的影响,得出该钢的静态和动态连续冷却转变(CCT)曲线。结果表明,试验钢未变形奥氏体在5℃/s冷却速度可得到全部贝氏体组织;变形奥氏体相变开始温度升高,随热变形量增加,针状铁素体转变区扩大,板条贝氏体转变区缩小。 The effect of cooling rate (0. 5 - 35 ℃/s) and strain (0. 3 - 0. 6) on structure of X100 pipeline steel (%: 0.06C, 0. 23Si, 1.90Mn, 0. 005P, 0.0003S, 0.28Mo, 0. 25Ni, 0. 23Cr, 0.05Nh, 0. 02Ti, 0. 20Cu, 0.025Al) has been studied by thermo-simulation test and the static and dynamic continuous cooling transformation (CCT) curves of the steel are obtained. Results show that complete bainite structure could be got at cooling rate of 5 ℃/s from un-deforrned austenite ; with deforming, the initial transformation temperature of austenite increases, and with increasing hot strain, the acicalar ferrite transformation region enlarges while the lath bainite transformation region shrinks.