Article ID Journal Published Year Pages File Type
1477656 Journal of the European Ceramic Society 2008 6 Pages PDF
Abstract

The residual stresses in YAG phase in directionally solidified eutectic (DSE) Al2O3/Y3Al5O12 (YAG) ceramic composite were estimated by X-ray diffraction technique. The YAG skeleton specimen without Al2O3 phase, extracted from the composite, was used as a thermally-induced stress-free reference specimen. The X-ray stress measurements with Cu Kα irradiation were performed on the two planes: parallel and perpendicular to the solidification direction. The estimated residual stresses on average were −220 MPa and −157 MPa on the planes parallel and perpendicular to the solidification direction, respectively. The measured residual stresses were described fairly well by the calculation based on a lamellar model under the condition of the stress-free temperature 1400–1600 K.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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