The shape of a coherent non-misfitting FeC precipitate formed from solute atoms that interact with a dislocation stress field was studied using kinetic Monte Carlo simulation on a rigid lattice. The system studied was a model for binary alloys with an interstitial alloying element similar to Fe-C. The interaction with the dislocation comprised both a short-range chemical term and a long-range deformation field. The effect of each of these terms upon precipitate shapes for different C supersaturations was investigated. A simple analytical model was proposed to rationalize the results obtained in the atomistic simulations.

Heterogeneous Precipitation on Dislocations - Effect of the Elastic Field on Precipitate Morphology. C.Hin, Y.Brechet, P.Maugis, F.Soisson: Philosophical Magazine, 2008, 88[10], 1555-67