|About this Abstract
||Materials Science & Technology 2012
||Phase Stability, Diffusion, Kinetics and their Applications (PSDK-VII)
||Lattice Monte Carlo Analysis of Vacancy Diffusion in the Presence of Discrete Trapping
||Piotr Warczok, Yao V. Shan, Ernst Kozeschnik
|On-Site Speaker (Planned)
The lattice Monte Carlo method is a well-established technique for the simulation of solid-state transformation and diffusion processes. In this work, the impact of vacancy-solute binding on substitutional diffusion in binary alloys is investigated. The vacancy diffusivity is the fastest for the ideal solution case and decreases with the vacancy preference toward any of the alloy components. If the vacancy/trap binding energy is attractive, the impact of trapping on the mobility of vacancies is significant. The relation between the correlation factor of the vacancy movement and the jump vacancies is analyzed. These observations are taken as a basis for a discussion of experimental diffusion coefficients of vacancies and solute atoms in binary Al alloys.