Transformational Plasticity in Bi2O3
- 1 January 1975
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 58 (1-2) , 37-40
- https://doi.org/10.1111/j.1151-2916.1975.tb18978.x
Abstract
Transformational plasticity associated with the monoclinic‐to‐cubic phase transition at 730°C in Bi2O3 was observed and characterized. This phenomenon is explained in terms of Greenwood and Johnson's model of internal stress‐induced deformation, proceeding, in this instance, by a time‐dependent, grain‐size‐sensitive creep mechanism, probably grain‐boundary sliding. Criteria are proposed for choosing other prospective transformationally plastic ceramics; they are met by Bi2WO6, which also exhibits extensive transformation plasticity.Keywords
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