Monte Carlo simulations of abnormal grain growth by sub-boundary-enhanced solid-state wetting

The role of sub-boundaries in inducing abnormal grain growth (AGG) by solid-state wetting was studied using a Monte Carlo simulation. Sub-boundaries of very low energy in a grain markedly increase the probability of solid-state wetting and thereby cause the grain to grow abnormally. The sub-boundary-enhanced solid-state wetting has the unique feature of inducing AGG without advantages such as high-mobility or low-energy boundaries between an abnormally growing grain and matrix grains.