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Contributions of Transformation and Microcracking to the Plastic Deformation of Magnesia‐Partially‐Stabilized Zirconia
Author(s) -
Batchelor Warren J.,
Finlayson Trevor R.,
Gross Anita K.
Publication year - 1993
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1993.tb06671.x
Subject(s) - materials science , cubic zirconia , composite material , shear (geology) , deformation (meteorology) , transformation (genetics) , transverse plane , tension (geology) , magnesium , shear matrix , mineralogy , metallurgy , geology , ultimate tensile strength , chemistry , structural engineering , ceramic , biochemistry , alloy , engineering , gene , amorphous metal
The measured plastic deformation of Mg‐PSZ under stress contains contributions from both transformation and microcracking. A method is described to separate the contributions from transformation and microcracking for samples deformed in uniaxial tension. Such a separation enables the ratio of the longitudinal to transverse strains arising from the transformation to be estimated. The results are compared to the predictions of the shear–dilatation model of Chen and Reyes‐Morel. Serious discrepancies are found between the experimental results and the predictions of the model and the possible reason for this is discussed.