Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2006-11-01

Journal: SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS

Included Journals: Scopus、EI、SCIE

Volume: 7

Issue: 8

Page Number: 812-818

ISSN: 1468-6996

Key Words: grain growth; Potts model; Monte Carlo simulation; nanostructured materials

Abstract: To systematically study normal grain growth in a two-phase volume-conserved system, a modified Potts model is proposed, in which the driving forces for grain boundary migration are the interfacial energy between two phases and the boundary energy inside each phase. Model-based simulation results show that the grain growth kinetics follows a power law with a temperature-independent exponent and that the normalized grain size distribution is lognormal and time invariant. Also, a simple theoretical model is used to predict the potential microstructure in a two-phase system due to the competition between interfacial and grain boundary energies. A critical ratio (similar to 2.6) of the grain boundary energy to the interfacial energy is found for a common two-phase system. (c) 2006 NIMS and Elsevier Ltd. All rights reserved.