Enhancement of thermal stability by microstructural refinement in nanocomposite materials

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)33-36
Journal / PublicationScripta Materialia
Publication statusPublished - 15 Sep 2014


The enhancement of thermal stability in nanocrystalline-amorphous (NC-a) materials was investigated by a modified Monte Carlo Potts method. The thermal stability, including the grain size stability and amorphous distribution stability, was found to be controlled by the amorphous fraction f and the energy ratio (Jgb/Jint) of the NC-NC grain boundary energy to the NC-a interfacial energy. The best thermal stability for temperatures up to 1550 K was observed with f = 0.279 and Jgb/Jint = 12, where finer grains are surrounded by thin and coherent NC-a boundaries.

Research Area(s)

  • Grain growth, Microstructure, Monte Carlo simulation, Nanocomposite materials, Thermal stability