Kinetics of Phase Coarsening

Abstract

Phase coarsening is a process where large particles grow by 
absorbing solute atoms at the expense of small particles. It is
an important process in controlling the thermal stability of
two-phase alloys against degradation of mechanical properties
at high temperatures. This process is driven by total interfacial energy reduction which results in an increase in the average size
of the particle population, and a decrease in the number density
of particles.

The goal of our project is to simulate the coarsening, a capillarity 
driven phenomenon, where large particles grow at the expense
of  small particles without any change in phase fraction. Here,
we  performed two kinds of simulations; single particle growth
and two particles merging together which describes coarsening.  These simulations are completed using finite element method. Codes of  the general cases for simulations are developed using Matlab.