M. Kobayashi et al., COMPUTER-SIMULATION OF GRAIN-GROWTH WITH CONSCIOUS OF MICROSTRUCTURALIMAGE DATA-BASE, Nippon Kinzoku Gakkaishi, 62(9), 1998, pp. 834-843
Simulation of grain growth towards the microstructural image data base
has been performed by the Monte Carlo technique proposed by Exxoton's
group. In the present simulation, dependence of grain boundary energy
on crystallographic misorientation, which is expressed in the same wa
y as the vector method (one of the ODF analysis methods) is taken into
consideration in order to describe actual microstructures. For the ev
olution of the simulated microstructure, more realistic feature and mi
gration of grain boundary are observed with an increase in the number
of neighboring shell k(s) for calculating the interactive energy. Grai
n growth exponents n in the microstructures with k(s)greater than or e
qual to 3 are about 0.4 similar to 0.5. Grains surrounded with low ene
rgy boundaries grow preferentially. Further, it is found that the low
energy grain boundaries do not always decrease in length during gain g
rowth, while the high energy grain boundaries decrease gradually.