Investigation of crystallization kinetics in platinum-based alloys by molecular dynamics method

In this study, the crystallization properties of platinum-palladium (Pt-Pd) alloy system such as critical radius, Avrami exponent (coefficients) for different concentrations of Pt during thermal processes have been investigated by using the Molecular Dynamics (MD) method. The Sutton-Chen (SC) Embedded Atom Method (GAM) which is a semi experimental potential energy function has been used in the Molecular Dynamics Method (MD). The volume fraction has been found by applied process of transformation from amorphous to crystal phase at different annealing temperatures by using Honeycutt-Andersen (HA) method obtained percentage rations of crystal-type bonded pairs in the system. Thus, Avrami coefficients obtained from experimental datas have been calculated by the MD method except for the experimental methods, and also Radial Distribution Functions (RDF) have been used to determine the structural properties of the system during the crystallization process. As a result, it has been observed that the crystallization occurs more easily as the concentration ratio of Pt increases in the alloy system.