STEMS （Simulation Tools for the Evolution of Micro-Structures）is a software that allows you to simulate, model and predict the evolution of microstructural changes in materials. The fundamental principle of this software is the Phase-Field/ Phase-field Crystal (PFC) Methods : a set of partial differential equations describing the coupling of the materials density and the concentration of alloy is solved.
STEMS is widely applied to the study of solidification process in metal or alloy in the spatial scale of 1~100 nm and in the temporal scale of 1~100 ms. Moreover, you can also study the effect of solidification pressure on the solid’s structure and the liquid phase in between the crystals, formation mechanism of the defect, nucleation, and growth of alloy, microsegregation , etc. Based on our knowledge, it is the only one that allows users to investigate the crack formation, cavitation, and alloy phase’s nucleation and growth, under the same model framework.
“Investigating gas-phase defects formation in late-stage solidification using a novel phase-field-crystal model “, Nan Wang, Nathan Smith and Nikolas Provatas, Phys. Rev. Materials 1 (2017), 043405.