Phase-field model for beta-to-omega transformation in titanium alloys

Abstract: In this talk, we revisit a phase separation model involving multiple wells, focusing on $\beta-\omega$ transformations observed in titanium alloys. We introduce a novel approach that alters the algebraic form of the interfacial free energy. This modification relaxes the conventional coercivity requirements on surface tensions within total-spreading scenarios and, crucially, eliminates the emergence of $\omega-\omega$ mixed phases—structures that are crystallographically forbidden. The capabilities of the new model are illustrated through basic numerical experiments, and we also describe the next steps toward more comprehensive, three-dimensional simulations of $\beta-\omega$ phase evolution in titanium systems.

MathematicsPhysics

Audience: researchers in the topic

Nečas Seminar on Continuum Mechanics

Series comments: This seminar was founded on December 14, 1966.

Faculty of Mathematics and Physics, Charles University, Sokolovská 83, Prague 8. If not written otherwise, we will meet on Mondays at 15:40 in lecture hall K3 (2nd floor)