The development of residual stresses in two Al 2 O 3 +5vol.% yttria-tetragonal zirconia polycrystal (Y-TZP) ceramic composites fabricated by conventional slip casting and by joining green cast tapes was investigated. Neutron diffraction profiles revealed compressive microstresses (−200MPa) in the Al 2 O 3 matrix and tensile ones (2200MPa) in the Y-TZP particles, irrespective of the processing route and the direction of measurement, which demonstrates the lack of residual macrostresses due to the joining procedure.