Effect of temperature on the mechanical behaviour of an oxide/oxide composite
Résumé
Oxide/oxide composites are being considered in the aerospace industry for the design of next-generation exhaust components. This study aims to determine the mechanical behaviour of a composite consisting in Nextel TM 610 fibres fabric (8 HSW) embedded in a porous alumina matrix. The mechanical properties were studied in tension and four-point bending up to 1300 °C. Up to 800 °C, the material behaviour is elastic and exhibits a few damage with only a low effect of the temperature. Increasing the temperature leads to the progressive apparition of a viscous behaviour up to 1000 °C and a superplastic behaviour beyond 1200 °C.
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