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Abstract
A combined model is described in the present paper. This model takes into account the solute segregation behaviour and precipitate growth kinetics by linking the fluxes expected at the grain boundaries from both segregation and precipitation mechanisms. The model proposed can realistically predict the influence of heat treatment on the behaviour of grain boundary precipitation. Two mathematical approaches, numerical and analytical, are used to perform the combined flux analysis. The results of modelling MgZn2 grain boundary precipitate behaviour in 7150 aluminium alloy are shown and a comparison of the results from theoretical approaches and experiment is given.
MST/1760
