加热速率对20MnSi钢相变速率及正火组织的影响
|
摘要
采用高精度差分膨胀仪对不同加热速率(5~3000℃/min)下20Mn Si钢的奥氏体化过程进行研究。结果表明:随加热速率的增大,奥氏体化速率显著增大,奥氏体形成所需的时间明显缩短。加热速率影响了正火过程中过冷奥氏体的相变行为,从而影响了钢材的组织。
The austenization process of 20 Mn Si steel was studied by high-resolution differential dilatometer in a wide heating rate range of 5-3000 ℃/min. The results show that with the heating rate increasing, the austenitization rate significantly increases. The time for the formation of austenite significantly reduces. The heating rate significantly affects the phase transition behavior of supercooled austenite in the process of normalizing, and then, the microstructure of the steel is affected.
The austenization process of 20 Mn Si steel was studied by high-resolution differential dilatometer in a wide heating rate range of 5-3000 ℃/min. The results show that with the heating rate increasing, the austenitization rate significantly increases. The time for the formation of austenite significantly reduces. The heating rate significantly affects the phase transition behavior of supercooled austenite in the process of normalizing, and then, the microstructure of the steel is affected.
引文
[1]杨吉春,张剑,栗宏伟,等.钒对高氮20Mn Si螺纹钢组织和性能的影响研究[J].钢铁钒钛,2015,36(1):43-47.
[2]Surajit Kumar Paul,Pritam Kumar Rana,Debdulal Das,et al.High and low cycle fatigue performance comparison between micro-alloyed and TMT rebar[J].Construction and Building Materials,2014,54:170-179.
[3]李阳,黄文克,张建春,等.HRB400螺纹钢的组织和变形抗力[J].金属热处理,2015,40(3):34-37.
[4]王国栋.新一代TMCP技术的发展[J].中国冶金,2012,22(12):1-4.
[5]宁保群,严泽生,赵捷,等.淬火温度对20Mn Si螺纹钢相变过程的影响[J].热加工工艺,2010,39(20):161-163.
[6]Liu Y C,Sommer F,Mittemeijer E J.Abnormal austenite ferrite transformation behaviour in substitute Fe-base alloys[J].Acta Mater,2003,51(2):507-519.
[7]宁保群.T91铁素体耐热钢相变过程及强化工艺[D].天津:天津大学,2007.
[8]宁保群,赵捷,刘永长.加热速度对20Mn Si钢奥氏体转变温度的影响[J].热加工工艺,2011,40(4):149-150
[9]崔忠圻,覃耀春.金属学与热处理(第2版)[M].北京:机械工业出版社,2007.
[10]Caballero F G,Capdevila C.Modelling of kinetics and dilatometric behaviour of austenite formation in a low-carbon steel with a ferrite plus pearlite initial microstructure[J].J Mater Sci,2002,37(16):3533-3540.
[2]Surajit Kumar Paul,Pritam Kumar Rana,Debdulal Das,et al.High and low cycle fatigue performance comparison between micro-alloyed and TMT rebar[J].Construction and Building Materials,2014,54:170-179.
[3]李阳,黄文克,张建春,等.HRB400螺纹钢的组织和变形抗力[J].金属热处理,2015,40(3):34-37.
[4]王国栋.新一代TMCP技术的发展[J].中国冶金,2012,22(12):1-4.
[5]宁保群,严泽生,赵捷,等.淬火温度对20Mn Si螺纹钢相变过程的影响[J].热加工工艺,2010,39(20):161-163.
[6]Liu Y C,Sommer F,Mittemeijer E J.Abnormal austenite ferrite transformation behaviour in substitute Fe-base alloys[J].Acta Mater,2003,51(2):507-519.
[7]宁保群.T91铁素体耐热钢相变过程及强化工艺[D].天津:天津大学,2007.
[8]宁保群,赵捷,刘永长.加热速度对20Mn Si钢奥氏体转变温度的影响[J].热加工工艺,2011,40(4):149-150
[9]崔忠圻,覃耀春.金属学与热处理(第2版)[M].北京:机械工业出版社,2007.
[10]Caballero F G,Capdevila C.Modelling of kinetics and dilatometric behaviour of austenite formation in a low-carbon steel with a ferrite plus pearlite initial microstructure[J].J Mater Sci,2002,37(16):3533-3540.