通过TMCP工艺实验,研究了终轧温度和卷取温度对低碳锰钢力学性能和微观组织的影响规律.结果表明,在形变诱导相变上限温度Ad3之上(850 ℃)终轧后快速冷却,组织主要由仿晶界型铁素体(GBA)和大量贝氏体组成,其中贝氏体铁素体呈板条状,塑性和韧性较高;当终轧温度降低到800 ℃(低于Ad3)时,得到的组织为等轴状铁素体和一定量的贝氏体,等轴铁素体的平均晶粒尺寸约为8 μm,强度较高,综合性能良好.终轧温度和卷取温度主要是通过改变实验钢的组织组成和晶粒大小来对其力学性能产生影响的.通过控制终轧温度和卷取温度,可以实现细晶强化、贝氏体相变强化和析出强化的复合强化,有利于低碳锰钢获得良好的综合性能.
参考文献
| [1] | Mintz B;Lewis J;Jonas JJ .Importance of deformation induced ferrite and factors which control its formation[J].Materials Science and Technology: MST: A publication of the Institute of Metals,1997(5):379-388. |
| [2] | Akihiko KOJIMA;Yoshiyuki WATANABE;Yoshio TERADA;Atsuhiko YOSHIE;Hiroshi TAMEHIRO .Ferrite Grain Refinement by Large Reduction per Pass in Nonrecrystallization Temperature Region of Austenite[J].ISIJ International,1996(5):603-610. |
| [3] | P. J. Hurley;P. D. Hodgson .Formation of ultra-fine ferrite in hot rolled strip: Potential mechanisms for grain refinement[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(2):206-214. |
| [4] | Pingguang Xu,Bingzhe Bai,Hongsheng Fang,Zhenjia Wang,Jianping Wang,Yongkun Pan.Development of grain boundary allotriomorphic ferrite/granular bainite duplex steel[J].北京科技大学学报(英文版),2003(02):39-44. |
| [5] | Li Long;Yang Chunzheng;Ding Hua .Study on Microstructures and Mechanical Properties of B510L Steel by TMCP[J].Materials Science Forum,2005(Pt.1):77-80. |
| [6] | Y.D. Huang;L. Froyen .Important factors to obtain homogeneous and ultrafine ferrite-pearlite microstructure in low carbon steel[J].Journal of Materials Processing Technology,2002(1/2):216-226. |
| [7] | 董瀚,孙新军,刘清友,翁宇庆.变形诱导铁素体相变现象与理论[J].钢铁,2003(10):56-67,55. |
| [8] | 方鸿生,徐平光,白秉哲,刘东雨,蔡漳平,孙卫华,唐立东.一种新的复相组织--仿晶界型铁素体/粒状贝氏体[J].金属热处理,2000(11):1-5. |
| [9] | 王建平,杨志刚,白秉哲,方鸿生,冯勇,徐洪庆.奥氏体形变对仿晶界型铁素体/粒状贝氏体复相钢组织和强韧性能的影响[J].金属学报,2004(03):263-269. |
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