学术论文

      低碳含铌钢粗晶奥氏体再结晶的数值模拟

      Numerical Simulation on recrystallization of coarse-grained austenite in low-carbon Nb-microalloyed steel

      摘要:
      建立了基于析出、回复和再结晶之间交互作用的低碳含铌钢组织预测模型,用于模拟低碳含铌钢热轧道次间隔期间粗晶奥氏体的再结晶及析出行为,并讨论了模型在绘制低碳含铌钢的再结晶-析出-时间-温度(RPTT)图中的应用. 结果表明,模型对两种低碳含铌钢在热变形道次间隔期间内粗晶奥氏体的组织演变过程的模拟结果与测试数据符合较好,可以有效预测不同低碳含铌钢在不同工艺条件下的析出和再结晶行为.
      Abstract:
      A microstructural prediction model of low carbon Nb-containing steels based on the interaction of precipitation, recovery and recrystallization was developed to simulate the evolution of precipitation and recrystallization of coarse-grained austenite in low carbon Nb-containing steels during pass interval of hot deformation. The application of this model in making the recrystallization-precipitation-temperature-time diagram (RPTT) of low carbon Nb-containing steels was discussed. The simulation results are well coincident with the experimental data of two low-carbon Nb-containing steels, indicating that the behaviors of precipitation and recrystallization can be predicted using this model for different low carbon Nb-containing steels at various processing conditions.
      作者: 李龙飞 [1] 阳锋 [1] 杨王玥 [2] 孙祖庆 [1] 王西涛 [1]
      Author: LI Long-fei [1] YANG Feng [1] YANG Wang-yue [2] SUN Zu-qing [1] WANG Xi-tao [1]
      作者单位: 北京科技大学新金属材料国家重点实验室,北京,100083 北京科技大学材料科学与工程学院,北京,100083
      刊 名: 北京科技大学学报 ISTICEIPKU
      年,卷(期): 2009, 31(12)
      分类号: TG111.7 TG142.33
      机标分类号: TG1 TF7
      在线出版日期: 2010年3月2日
      基金项目: 国家自然科学基金