V. Tikare et Jd. Cawley, NUMERICAL-SIMULATION OF GRAIN-GROWTH IN LIQUID-PHASE SINTERED MATERIALS - II - STUDY OF ISOTROPIC GRAIN-GROWTH, Acta materialia, 46(4), 1998, pp. 1343-1356
Citations number
19
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
The Potts model was used to study grain growth in liquid phase sintere
d materials. Its application to the study of isotropic grain growth by
Ostwald ripening in a fully wetting system will be presented. The int
erpretation of the simulation results will be described and discussed.
It was found that the set of simulation parameters used gave diffusio
n-controlled grain growth for solid fraction ranging from 0.30 to 0.90
. The grain size distribution varied with solid fraction, becoming bro
ader and more peaked with increasing solid fraction. The skewness was
near zero at solid fraction of 0.41 and shifted to larger grain sizes
with increasing solid fraction. This shift in the skewness of grain si
ze distribution is not predicted by previous analytical or numerical m
odels; however, it is consistent with experimental data collected by F
ang and Patterson [Acta metall., 1993, 41, 2017] in the W-Ni-Fe system
. (C) 1998 Acta Metallurgica Inc.