STUDY OF TRANSFORMATION PLASTICITY IN TETRAGONAL ZIRCONIA POLYCRYSTALS BY MOIRE INTERFEROMETRY

【摘要】 <正> Transformation plasticity in ceria-stabilized tetragonal zirconia poly-crystals due to the stress-induced tetragonal-to-monoclinic martensitic transforma-tion under tension and bending is studied by moire interferometry. The whole fringepatterns including u fields and v fields are acquired. According to these patterns, thedistributions of transformation plasticity in transformation zones are obtained, andthe phenomenon of plastic flow localization for transformation is revealed. The abovework provides a significant experimental foundation for establishing transformationconstitutive relations更多还原

【Abstract】 Transformation plasticity in ceria-stabilized tetragonal zirconia poly- crystals due to the stress-induced tetragonal-to-monoclinic martensitic transforma- tion under tension and bending is studied by moire interferometry. The whole fringe patterns including u fields and v fields are acquired. According to these patterns, the distributions of transformation plasticity in transformation zones are obtained, and the phenomenon of plastic flow localization for transformation is revealed. The above work provides a significant experimental foundation for establishing transformation constitutive relations更多还原