Abstract
Recent studies have shown that the maximum strength of a number of PSZ alloys appears to be limited by the critical stress to initiate the t to m — ZrO2 transformation. An alternative explanation of these observations is that the peak strength is limited by the substantial R-curve of these tough ceramics. This paper presents evidence to support both approaches. It is concluded that whilst stress-induced transformation provides a simplistic description analogous to the brittle to ductile transition in metals, the inherent R-curve behaviour of cracks is the mechanistically more correct description for the observed maxima in strength-toughness measurements for various PSZ alloys.
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© 1986 Plenum Press, New York
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Swain, M.V. (1986). Strength-Toughness Relationships for Transformation Toughened Ceramics. In: Bradt, R.C., Evans, A.G., Hasselman, D.P.H., Lange, F.F. (eds) Fracture Mechanics of Ceramics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-7026-4_12
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DOI: https://doi.org/10.1007/978-1-4615-7026-4_12
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