Title

The Roles of Grain Boundary Energy Anisotropy and Second-Phase Particles on Grain Growth in Polycrystalline Materials

Abstract

A phase-field model was developed to investigate the concurrent effects of grain boundary energy anisotropy and second-phase particles on grain growth in polycrystalline materials. The phase-field model was developed based on the evolution of non-conserved phase-field variables according to the time-dependent Ginzburg-Landau (TDGL) equation. The Read-Shockley and modified Read-Shockley models for cubic crystals were considered to include anisotropic grain boundary energies for low and high misorientation angels between adjacent grains. Systems without particles reach a steady state grain growth rate. The presence of particles significantly alters the microstructures during grain growth. Results show that for systems with particles, the critical average grain size to stop grain growth depends on both the volume fraction and size of particles and also on the grain boundary energy anisotropy.

Meeting Name

4th International Multi-Conference on Engineering and Technological Innovation (2011: Jul. 19-22, Orlando, FL)

Department(s)

Materials Science and Engineering

Keywords and Phrases

Anisotropic grains; Average grain size; Cubic crystal; Grain-boundary energy; Mis-orientation; Phase-field modeling; Second phase particles; Time-dependent Ginzburg-Landau equation; Anisotropy; Finite element method; Grain boundaries; Polycrystalline materials; Grain growth; Anisotropic grain boundary energy; Grain growth

International Standard Book Number (ISBN)

9781936338368

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2011 International Institute of Informatics and Systemics, All rights reserved.


Share

 
COinS