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A comprehensive particle size distribution model has been developed for the simulation of γ′ precipitation in multicomponent Ni alloys. Nucleation, growth and coarsening of the precipitates are described by a particle size distribution. The growth rate of each precipitate class is calculated with a multi-component diffusion model formulated for non-diagonal matrices of diffusion coefficients. The...
A model based on classical kinetic theory has been developed to predict the evolution of microstructure that occurs on ageing in alloy systems where the supersaturated solid solution decomposes by forming either continuous, discontinuous or mixed precipitate morphologies. The model has been applied to make predictions for the Mg–Al system and explore the interaction between precipitation modes. It...
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