Effects of amorphous matrix on the grain growth kinetics in two-phase nanostructured films: a Monte Carlo study

Large scale Potts model Monte Carlo simulation was carried on 3-dimensional square lattices of 1003 and 2003 sizes using the Metropolis algorithm to study grain growth behavior. Simulations were carried out to investigate both growth kinetics as well as the Zener limit in two-phase polycrystals inhibited in growth by second phase particles of single-voxel size. Initially the matrices were run to 10,000 Monte Carlo steps (MCS) to check the growth kinetics in both single phase and two-phase poly-crystals. Grain growth exponent values obtained as a result have shown to be highest (~ 0.4) for mono-phase materials while the value decreases with addition of second phase particles. Subsequently the matrices were run to stagnation in the presence of second phase particles of volume fractions ranging from 0.001to 0.1. Results obtained have shown a cube root dependence of the limiting grain size over the particle volume fraction thus reinforcing earlier 3D simulation efforts. It was observed that there was not much difference in the values of either growth kinetics or the Zener limit between 1003 and 2003 sized matrices, although the results improved mildly with size.

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Monte-Carlo Modeling of Grain Growth of Plain Carbon Strip Steel Q235 during Heating Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.538-541.869 ◽

2012 ◽

Vol 538-541 ◽

pp. 869-872 ◽

Cited By ~ 1

Author(s):

Hong Yan Ma ◽

Chun Li Mo ◽

Shou Peng Du

Keyword(s):

Monte Carlo ◽

Grain Growth ◽

Growth Kinetics ◽

Heating Process ◽

Kinetics Equation ◽

Grain Distribution ◽

Simulation Results ◽

Mc Simulation ◽

Grain Growth Kinetics ◽

Reheating Process

The grain growth kinetics of Q235 during reheating process was studied with Monte Carlo (MC) simulation. Heating process was performed at 1223K, 1273K, 1323K, 1373K, 1473K and 1523K for 10s, 20s, 40s, 80s, 120s, respectively. Samples were tested on Gleeble 1500 thermal simulation tester. The experimental results were analyzed regressively to obtain grain growth kinetics equation. The kinetics equation of Q235 was introduced to MC simulation to simulate the microstructure evolution and compute the average grain size at different step during heating process. MC simulation results showed the grain distribution under different time and the grain growth is in consistent with physical simulation. The simulation results also can help to set processing parameters during reheating of ingot.

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Modeling of grain growth kinetics with Read–Shockley grain boundary energy by a modified Monte Carlo algorithm

Materials Letters ◽

10.1016/s0167-577x(02)00415-9 ◽

2002 ◽

Vol 56 (1-2) ◽

pp. 47-52 ◽

Cited By ~ 18

Author(s):

Qiang Yu ◽

Sven K. Esche

Keyword(s):

Monte Carlo ◽

Grain Boundary ◽

Grain Growth ◽

Growth Kinetics ◽

Boundary Energy ◽

Monte Carlo Algorithm ◽

Grain Boundary Energy ◽

Grain Growth Kinetics

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Grain-growth kinetics in a nanocrystalline 2 yttria-stabilized tetragonal zirconia polycrystals ceramic with a silica-based glassy phase

Journal of Materials Research ◽

10.1557/jmr.2003.0130 ◽

2003 ◽

Vol 18 (4) ◽

pp. 950-955 ◽

Cited By ~ 2

Author(s):

O. Markhsev ◽

R. Chaim

Keyword(s):

Grain Boundary ◽

Grain Growth ◽

Growth Kinetics ◽

Boundary Diffusion ◽

Glassy Phase ◽

Tetragonal Zirconia ◽

Two Phase ◽

Grain Growth Kinetics ◽

Kinetics Of ◽

Grain Coalescence

Grain-growth kinetics of a nanocrystalline 2 yttria-stabilized tetragonal zirconia polycrystals ceramic containing a silica-based glassy phase was determined at 1200 to 1600 °C. At short durations below 1300 °C, the slow grain growth was associated with zirconia dissolution for composition equilibration. The significant increase in the grain size started only after 10 h at 1400 °C or at shorter durations at higher temperatures. Clusters of the cubic grains formed at the two-phase field confirm the inhibited tetragonal grain growth to be independent of the cubic grains. The microstructure evolution during the tetragonal grain growth was interpreted in terms of grain coalescence. Grain growth was initiated by contact flattening and followed by grain-boundary diffusion through the grain-boundary glassy phase. Some aspects of cation diffusion within the viscous glass were also discussed.

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