A thermodynamic and kinetic-based grain growth model for nanocrystalline materials: Parameter sensitivity analysis and model extension

摘要: Abstract Predicting grain growth in nanocrystalline materials requires modeling approaches that incorporate boundary thermodynamics and kinetics. In this work, the thermokinetic model of Chen et al. (2012) for was applied to experimental X-ray diffraction measurements from a binary alloy an effort (1) understand influence thermodynamic, kinetic, material parameters model; (2) extend by incorporating temperature dependence. The performs well saturated case alloy, where it is assumed solute segregates boundaries thermodynamically/kinetically reduces driving force growth. sensitivity analysis (Monte Carlo global analysis) identifies important thermodynamic/kinetic their correlation with one another present model. This then extended include change these independent as function effect initial size distribution. research shows thermodynamic kinetic contributions can describe be parameterized evolution stabilization systems.