Huizenga Richard M, Bos Cornelis, Sietsma Jilt
Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.
Netherlands Institute for Metals Research, Mekelweg 2, 2628 CD Delft, The Netherlands.
J Mater Sci. 2008;43(11):3744-3749. doi: 10.1007/s10853-007-2219-0. Epub 2008 Jun 1.
A fast three-dimensional phase transformation model is formulated for the transformation from ferrite to austenite in low-carbon steel. The model addresses the parent microstructure, the nucleation behaviour of the new phase and the growth of the new phase. During the growth, the interface velocity of the ferrite grains is calculated using a mixed-mode growth model. The simulated transformation kinetics is compared with experimental kinetics for an Fe-C-Mn steel for four different cooling rates. In general, the model predicts the kinetics quite well. In addition, the mixed-mode character of the transformation is shown for the different cooling rates.
建立了一个快速三维相变模型，用于模拟低碳钢中铁素体向奥氏体的转变。该模型考虑了母相微观结构、新相的形核行为以及新相的生长。在生长过程中，使用混合模式生长模型计算铁素体晶粒的界面速度。将模拟的转变动力学与一种Fe-C-Mn钢在四种不同冷却速率下的实验动力学进行了比较。总体而言，该模型对动力学的预测相当准确。此外，还展示了不同冷却速率下转变的混合模式特征。
