Orientation Relationships of Phase Transformation and Precipitation in Metallic Materials

Dear Colleagues,

Phase transformation and precipitation are important metallurgical processes in many metals and alloys. The properties of the material are significantly affected by the composition, crystal structure, morphology, size and distribution of the phases and precipitates formed in the final microstructure. During these processes, well-defined crystallographic orientation relationships may exist between the parent phase/matrix and the transformed phases/precipitates, which play an important role in determining the final microstructure, texture and properties of the material. Ever since the discovery of the orientation relationship between the taenite and kamacite in meteorite by J. Young in 1926, orientation relationships have been studied for nearly a century and many orientation relationships have been reported in different alloy systems. However, the mechanisms governing the transformation/precipitation processes, as well as the physics behind variant selection, are still not fully understood. Over the past decades, new characterization tools and modeling techniques have emerged, which have enabled a more accurate and detailed investigation on orientation relationships and helped the advancement of transformation/precipitation theories.

This Special Issue collects papers on the crystallographic orientation relationships and variant selection during the phase transformation and precipitation of metals and alloys. Papers focusing on the discovery of new orientation relationships, experimental characterization and theoretical analysis of existing orientation relationships and variant selection, and the development of new theories and modeling techniques are particularly welcome. Reviews and fundamental crystallography about orientation relationships and their representation are also welcome.

Dr. Youliang He
Dr. Clodualdo Aranas
Guest Editors

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• orientation relationship
• phase transformation
• precipitation
• variant selection
• crystallographic texture
• microstructure–property relation
• metals and alloys