Computer simulation model for coupled grain growth and ostwald ripening - Application to Al2O3-ZrO2 two-phase systems

Long Qing Chen, Danan Fan

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

A kinetic model based on generalized continuum time-dependent Ginzburg-Landau (TDGL) equations is proposed for studying coupled grain growth and Ostwald ripening in multiphase systems. In this model, an arbitrary multiphase microstructure is described by many orientation field variables which represent crystallographic orientations of grains in each phase and by n - 1 composition field variables which distinguish the compositional differences among n phases. Microstructural development during simultaneous grain growth and Ostwald ripening is predicted by the temporal evolution of these field variables by numerically solving the TDGL equations. A particular example, Al2O3-ZrO2 particulate composite, was considered. The effects of the volume fraction of ZrO2 on the microstructural features and their evolution were studied and compared to experimental observations and previous thermodynamic analysis.

Original languageEnglish (US)
Pages (from-to)1163-1168
Number of pages6
JournalJournal of the American Ceramic Society
Volume79
Issue number5
DOIs
StatePublished - May 1996

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Computer simulation model for coupled grain growth and ostwald ripening - Application to Al<sub>2</sub>O<sub>3</sub>-ZrO<sub>2</sub> two-phase systems'. Together they form a unique fingerprint.

Cite this