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A new criterion for the prediction of rafting in superalloys is presented, based on the anisotropy in the interfacial dislocation energies. A map developed with this approach is shown to provide similar yet improved predictions compared to the one constructed by Pineau, who used a more complex criterion based on the elastic energy of inclusions. This simple criterion is expected to provide a more efficient way to model the anisotropic interfacial energies in the simulation of the microstructural evolution causing rafting phenomena.

Additional information

Authors: ARRELL D J, JRC Petten (NL);VALLÉS J L, JRC Petten (NL)
Bibliographic Reference: Article: Scripta METALLURGICA et MATERIALIA, Vol. 30 (1994) pp. 149-153
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