Phasefield simulation of the microscopic solidification structure and phase distribution (A08)

项目A8的主要主题是基于热化学数据库并考虑对流的凝固过程微观结构模拟。对流的模拟是通过直接使用Navier-Stokes方程或替代地通过格子Boltzmann模型来完成的。因此，将创建有关微观结构、晶界、偏析图、沉淀物和延展性的准确信息。取决于Al含量，高Mn钢仅凝固为y相或两相（y + 8）。特别是在MBIP材料中，预期在凝固结束时发生周晶转变。局部变形将通过使用微观力学连续模型来建模。

Main topic of project A8 is the simulation of microstructure during solidification based on thermochemical databases taking convection into account. Simulation of convection is done by using directly Navier-Stokes equations or as alternatively by a Lattice Boltzmann model. So, exact information about the microstructure, the grain boundaries, segregation maps, precipitates and ductility will be created. Depending on the Al content high Mn steels solidify only as a y-phase or as two phases (y + 8). Especially in MBIP materials the peritectic transformation at the end of solidification is expected. The local deformation will be modeled by using a micromechanical continuum model.