【摘要】 在THERMECMASTOR-Z热模拟实验机上测定了E36船板钢的连续冷却转变曲线,利用光学显微镜对钢组织进行了观察,并利用维氏硬度计对E36钢硬度进行了测定。结果表明,试验钢奥氏体向铁素体转变温度在785~590℃范围内。当冷却速率小于20℃/s时,随着冷却速率的增快,E36钢晶粒度增加较为明显;而当冷却速率大于20℃/s时,E36钢晶粒度变化趋于平缓。当冷却速率小于20℃/s和大于60℃/s时,E36钢维氏硬度值增加较大;而当冷却速率在20~60℃/s范围时,E36钢维氏硬度的变化趋于平缓。更多还原

【Abstract】 The continuous cooling transformation curves of E36 steel are studied by THERMECMASTOR-Z thermal mechanical simulation.The steel microstructure is observed by means of an optical microscope,and the steel hardness is measured.The results show that: γ→α transformation temperature is between 785~590 ℃ for the E36 steel;the grain size increases obviously with the raised cooling rate when the cooling rate is lower than 20 ℃/s,while grain size tends to vary gently with the raised cooling rate when the cooling rate is higher than 20 ℃/s;Vickers hardness increases obviously with the increasing cooling rate when the cooling rate is lower than 20 ℃/s or higher than 60 ℃/s,while Vickers hardness tends to vary gently in the cooling rate range of 20～60 ℃/s.更多还原