点击次数：

论文类型：期刊论文

发表时间：2006-11-01

发表刊物：SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS

收录刊物：SCIE、EI、Scopus

卷号：7

期号：8

页面范围：812-818

ISSN号：1468-6996

关键字：grain growth; Potts model; Monte Carlo simulation; nanostructured materials

摘要：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.