Abstract
Crystallographic parameters associated with the martensitic phase transformation from bcc to orthorhombic structure is derived by using the rigorous infinitesimal deformation approach, which predicts crystallographic parameters such as habit plane, orientation relationship between austenite and martensite, rotation matrix and total shape deformation matrix etc., from a knowledge of only the crystal structures of the austenite and martensite phase. The obtained numerical values of orientation relationships observed in TaOy plates in the present study are compared with the predictions of the phenomenological crystallographic theory and experimental values.
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