To study the deformation reaction of different metallurgical phases of the micron structure of
crack tips of zirconia ceramics in the loading state, the paper presents the micro experimental study based
on the digital correlated method of analysis by scanning electron microscope on the displacement field in
the micro areas of crack tip of the specimen of the Y2O3-ZrO2 toughened ceramic with the simple edge
notch beam method and under the action of three-point bending loads. First, SEM analyses was made on
the local area of the crack tip of a specimen’s polished surface before and after loads are applied to the
specimen, thus obtaining two SEM images, one before the application of the loads and another after the
load application, which contained their displacement information. Then, digital correlation calculations
were made between the gray scales of the pixels of the two images in order to obtain the microscopic
displacement fields of the crack tips in the microstate, thus unveiling the deformation modality and
displacement response of different metallurgical phases of the crack tips of zirconia ceramics when
subject to loads. The results of the studies will provide foundations and basis for further research in the
mechanical properties of the ceramics with Y2O3-ZrO2 and their relationship with the microstructures.