论文部分内容阅读
选取了现有典型的C-Mn钢相变过程的物理冶金模型,包括5组孕育期模型、7组相变动力学方程模型、5组相变后铁素体晶粒尺寸模型。利用自行开发的组织性能预报系统软件模拟计算了在3组实际冷却工艺条件下各模型的奥氏体转变过程,并对各模型进行了评价。结果表明,对于所设定的成分和工艺条件,适用性较好的孕育期模型是Kwon所提出的模型;适用性较好的动力学方程模型是Liu、Donnay和Sun所提出的模型;适用性较好的铁素体晶粒尺寸模型是Hodgson所提出的模型。
The typical metallurgical models of phase transformation of C-Mn steel are selected, including five groups of inoculation period models, seven phase-change kinetic equations and five sets of phase transformation ferrite grain size models. The self-developed tissue performance prediction system was used to simulate the austenite transformation process of each model under the three actual cooling conditions. The models were also evaluated. The results show that the model of inoculation period with good applicability is the model proposed by Kwon for the set composition and process conditions, and the model with good adaptability is the model proposed by Liu, Donnay and Sun. The applicability The better ferrite grain size model is a model proposed by Hodgson.