Superplasticity as an arrhenius rate process
- 1 February 1976
- journal article
- other
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 33 (2) , 371-374
- https://doi.org/10.1080/00318087608225782
Abstract
The empirical observation that for superplastic deformation the apparent activation energy determined at constant strain rate is closer to the activation energy for grain boundary diffusion (i.e. that appropriate to the kinetics of the process) compared to the apparent activation energy evaluated at constant stress, is accounted for. The general case in which the activation energy is a function of temperature, stress and strain rate is also considered.Keywords
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