Title of article
Grain size and temperature dependence of the threshold stress for superplastic deformation in yttria-stabilized zirconia polycrystals
Author/Authors
Dom??nguez-Rodr??guez، نويسنده , , Alfonso Bravo-Leon، نويسنده , , A and Ye، نويسنده , , J.D and Jiménez-Melendo، نويسنده , , M، نويسنده ,
Pages
5
From page
97
To page
101
Abstract
The influence of the threshold stress on the value of the activation energy (Q) and stress exponent (n) measured during creep tests in fine-grained Y2O3-doped ZrO2 polycrystals has been investigated in the low-stress region at intermediate temperatures. A significant increase of the measured value of Q and n with decreasing stress has been observed, consistent with the existence of a threshold stress for superplastic deformation.
Keywords
Activation energy , Threshold stress , Y–TZP , Superplasticity
Journal title
Astroparticle Physics
Record number
2053435
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