Model of phase separation and of morphology evolution in two-phase alloy

Abstract

Elementary theory of mass-transfer in two-phase alloy under electromigration with account of two competing mechanisms of the fluxes equilibration is presented. These two competing mechanisms are Kirkendall effect and backstress. Various versions of Monte Carlo models for simultaneous simulation of structure evolution kinetics and of mass-transfer kinetics under high-density current are presented. Possibility of self-organization with minimization of Joule heating is demonstrated.

Keywords:

• electromigration
• phase separation
• backstress
• Kirkendall effect
• Monte Carlo simulation
• entropy production
• morphology

Acknowledgements

The work is supported by The State Fund for Fundamental Researches of Ukraine (Project F40.7/040) and by Ministry of Education and Science of Ukraine.