Computer Simulation of Texture-controlled Grain Growth

抄録

Based on the statistical theory of texture controlled grain growth by the present authors comprehensive computer simulations were carried out. For a system consisting of two textural components the influence of the most important parameters, such as initial volume fractions of the components, initial mean radii and grain growth diffusivities were investigated. It was found that during grain growth no quasistationary texture is achieved. Instead complete transitions of the texture occur, leading to an intermediate broadening of the grain size distribution, which for certain values of the involved parameters appears as pronounced secondary recrystallization. The grain growth kinetics does not follow the R-t^1/2 law, but in a double logarithmic plot (log R vs. log t) shows a stepwise curve with alternating flat and steep ranges.