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在模拟实验和工业试验验证的基础上,建立了高碳钢高速线材在轧制和冷却过程中组织演变及力学性能系列模型,包括临界应变、奥氏体动态及静态再结晶、奥氏体相变体积分数、珠光体片间距以及组织-性能关系等子模型.基于以上模型,开发了一个模拟程序,对高速线材生产的物理冶金过程进行了仿真计算,得到轧件的温度场、奥氏体晶粒尺寸演变、最终组织特征和力学性能.模拟结果显示主要轧制温度及最终组织性能与现场实测结果吻合较好.
Based on the simulation experiments and industrial tests, a series of models of microstructure evolution and mechanical properties of high carbon steel high speed wire during rolling and cooling were established, including critical strain, austenite and static recrystallization, austenite phase Variable volume fraction, pearlite sheet spacing and the relationship between the structure and the performance of the submodel.Based on the above model, a simulation program was developed to simulate the physical metallurgy process of high-speed wire rod production, the temperature field of the rolling element, the austenite Grain size evolution, final microstructure and mechanical properties.The simulation results show that the main rolling temperature and final microstructure properties are in good agreement with the field measurements.