Buckling and spalling failure of alumina grown by oxidation on ODS FeCrAl alloys

Sniezewski, Julien; Lours, Philippe; Maoult, Yannick Le
March 2011
Materials at High Temperatures;Mar2011, Vol. 28 Issue 1, p17
Academic Journal
In situ investigation of thermal shocks imposed to alumina grown on FeCrAl alloy at high temperature shows that interfacial buckling is the preferential route to spallation. Various parameters, either intrinsic or extrinsic to the substrate/oxide system, are analysed in terms of variation in interfacial fracture energies and propensity of alloy grains to wrinkle during high temperature exposure depending on their crystal orientation.


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