Precise Calibration of Displacement Vector Map during Superplastic Deformation in Tetragonal Zirconia Polycrystal

Abstract

In previous papers, the present authors observed grain motion in tetragonal zirconia polycrystal during superplastic deformation, and showed the displacement vector map of 748 grains. The map had an interesting feature such as transient domain structure. However, the authors did not pay much attention to the measurement error at that time. In this paper, the influence of measurement error on the map was quantitatively investigated. After precise calibration, it was revealed that measurement error did not have much influence on the feature, and statistics of grain motion was discussed on the calibrated map.