Transformation twinning in monoclinic zirconia particles

Abstract

In this paper, the continuum theory of dispacive phase transformation is applied to investigate the kinematical aspect of twinning in monoclinic ZrO2 particles transformed from tetragonal phase. The numerical calculations show that six twin systems may operate in the monoclinic zirconia particles, from a pure kinematical point of view. We have also demonstrated that the fine coherence of the twin interface expects an amplitude vector on the interface which happens to approximately satisfy the invariant plane strain assumption in the phenomenological theory of martensite transformation. © 1992.