A method to predict the orientation relationship, interface planes and morphology between a crystalline precipitate and matrix: part II – application

Abstract

A model based on near coincidence of diffraction intensity-weighted reciprocal lattice spots was used to study the orientation relationships between a precipitate and matrix in various alloys. The model was used to calculate the orientation relationship and interface orientations between phases including body-centred cubic, body-centred tetragonal, face-centred cubic and hexagonal close-packed crystals. Comparison of calculated results with those reported from various experimental observations demonstrate that in most cases the model can predict the orientation relationship between two phases with an accuracy of a few degrees or better. Calculation of the interface orientation was found to be very sensitive to the exact orientation relationship and therefore, in some cases, showed significant deviation from experimental observations.

Keywords:

• interfaces
• crystalline interface
• grain boundaries
• orientation relationship
• interface orientation

Acknowledgements

This research was supported by the National Science Foundation under Grants DMR-0554792 and DMR-1106230.