Padmanabhan, K. A. ; Davies, G. J. (1973) On the activation energy for superplastic flow Physica Status Solidi A, 18 (1). pp. 295-302. ISSN 0031-8965
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/pssa.22...
Related URL: http://dx.doi.org/10.1002/pssa.2210180130
Abstract
The equations of superplastic flow are used to show that for superplastic flow the activation energy at constant stress, Qσ, is not the same as the activation energy at constant strain rate, Q-ε, and that they are related by Qσ = (1/m) Q-ε where m is the strain-rate sensitivity index. Subsequently, it is shown that this predicted relation is in agreement with experimental observations and can account for discrepancies in the interpretation of activation energy measurements on superplastic materials.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| ID Code: | 66333 |
| Deposited On: | 22 Oct 2011 11:49 |
| Last Modified: | 22 Oct 2011 11:49 |
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