(1)By sequential slip casting, ATZ/AMZ laminates have been obtained with an elastic modulus ≈55% higher than the one calculated according to the rule of mixture. This increase has been explained considering that the AMZ layers of this laminate are subjected to compressive residual stresses. Because of this, on cooling the tetragonal→monoclinic martensitic transformation of coarse (≈ 2 μm) zirconia grains dispersed in the alumina matrix was inhibited. This fact affects the fracture behavior of this laminate: (i) deflecting the crack at ATZ/AMZ interface and (ii) changing the fracture mode from transgranular at ATZ layer to intergranular at AMZ layer. (2)It is now possible to design ATZ/AMZ laminated materials with a high compressive residual stress value (>1 GPa) at the AMZ layer by controlling the content of m- ZrO_2 in the AMZ and the thickness ratio of ATZ and AMZ layers. This fact will beneficially affect the fracture behavior of the laminate composites.
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