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美国阿拉巴马大学的L.nastacd和D.M.Stefanescu开发了一种描述等轴枝晶凝固的分析模型以用于凝固动力学—宏观迁移模型化。该模型放宽了在以往这类模型(像Dustin—Kurz,Rappaz—Thevoz和Kanetkar—Stefanesku模型〕中所必需要作的一些假定条件。该模型最重要的一个特点是其提供了枝晶凝聚的计算方法,从而深入地了解到凝固期间枝晶形态演变的模糊区域。一种称之为微观潜热法(MLHM法)的特殊方法被用于将宏观热流与微观生长动力学联系起来。他们结合MLHM法导出了微观模型化的稳定性标准。通过运用这种联系,CPU的占用时间的减少量达到了90％。该模型可应用于描述Incnel 718超合金凝固期间的显微组织演变过程。他们将这
L.nastacd and D.M. Stefanescu of the University of Alabama at the University of America have developed an analytical model describing the solidification of equiaxed dendrites for use in coagulation kinetic-macroscopic modeling of migration. This model relaxes some of the assumptions necessary in the previous models of this type, such as the Dustin-Kurz, Rappaz-Thevoz and Kanetkar-Stefanesku models. One of the most important features of this model is that it provides a calculation of dendrite cohesion Method, and thus in-depth understanding of the dendritic morphology during the development of fuzzy areas.A so-called micro-latent heat method (MLHM method) is a special method for the macroscopic heat flow and microscopic growth kinetics associated with MLHM method Derived the micro-modeling stability criteria by which the CPU footprint was reduced by 90%. This model can be used to characterize the microstructure evolution during the solidification of the Incnel 718 superalloy