Strain hardening under structural superplasticity conditions
Abstract
A model is proposed for describing the hardening of fine-grained materials deformed under structural superplasticity conditions. Under these conditions, the strain dependence of the flow stress is shown to be caused by the internal stress fields induced by the defects introduced into grain boundaries during intragranular slip. Expressions describing the dependences of the flow stress on the rate and temperature of superplastic deformation and the structural parameters of the material are obtained.
- Publication:
-
Physics of the Solid State
- Pub Date:
- April 2007
- DOI:
- 10.1134/S1063783407040142
- Bibcode:
- 2007PhSS...49..684C
- Keywords:
-
- 62.20.Fe;
- 81.40.Ef;
- 61.72.Cc