Comparative analysis of the cellular and Johnson-Mehl microstructures through computer simulation

Abstract

The geometric properties of polygranular microstructures of the Johnson-Mehl and cellular types have been studied through computer simulation. These prototypic microstructures arise naturally from the classical model of a phase transformation in a one-component solid through growth from a random distribution of nucleation sites. The

Current issues in recrystallization: a review

“…The first, geometrical, method addresses primarily the final microstructural state; it can be used to investigate microstructural evolution, provided that one is not concerned with the effect of grain growth occurring in parallel. Such models of recrystallization were first elaborated by Mahin and Hanson [112] and then developed further by Frost and Thompson [113]. Furu [114] and Juul Jensen [115] have recently extended these models to predict grain size and texture development during recrystallization.…”

Modeling of Cast Iron Solidification—The Defining Moments

“…[73] This is a Monte-Carlo simulation based on a pixel gradual calculation of the structure. [74] This approach can nicely show the influence of low and high nucleation potential on the eutectic grain structure. As shown in Figure 23, low nucleation potential produces a nonuniform grain structure because of late nucleation during the undercooling at the end of solidification.…”

Computer Aided Multi-scale Design of SiC-Si3N4 Nanoceramic Composites for High-Temperature Structural Applications

“…This will result in on the fly changes in the microstructures corresponding to the need of the optimization algorithms. The Johnson-Mehl model [106][107][108] and the tessellation process for a Voronoi network [108][109][110] are the most well known techniques that have been used to develop microstructure evolution for realistic microstructural representation.…”