Interfaces and orientation relationships
Автор: bhadeshia123
Загружено: 2026-02-20
Просмотров: 23
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This video has been created automatically from This is chapter 7 of the book (https://www.phase-trans.msm.cam.ac.uk...) Geometry of Crystals, polycrystals, and phase transformations" by H. K. D. H. Bhadeshia
This text examines the geometrical structure of crystalline interfaces and the mathematical ways to represent their orientation relationships. It explains that boundaries between crystals often consist of periodic defect arrays, such as edge dislocations in a tilt boundary, which help determine the interfacial energy. For larger misorientations where simple dislocation models fail, the author introduces the Coincidence Site Lattice (CSL) to identify special orientations where lattice points match across the interface. The value Σ is used to quantify the density of these shared sites, which directly influences the physical properties and stability of the material. Ultimately, the source provides a framework for using coordinate transformation matrices to analyse how different crystal grains align and interact.
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