Deformation and failure mechanisms are characterized for fully and partially yttria-stabilized single crystals tested in compression from 23 to 1150° C. It is found that both types of material exhibit extensive plastic flow over most of this temperature range, producing rapid decreases in strength with increasing temperature. Tetragonal to monoclinic transformation-induced plasticity is not observed; rather, plastic flow is related solely to dislocation activity. Evidence is found for apparent cubic to rhombohedral transformation during polishing, and reverse rhombohedral to cubic transformation during imposed compressive stress.
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Lankford, J. Deformation and fracture of yttria-stabilized zirconia single crystals. J Mater Sci 21, 1981–1989 (1986). https://doi.org/10.1007/BF00547937
- Failure Mechanism
- Compressive Stress
- Plastic Flow