On the Theory of High-Strain-Rate Superplasticity

V. N. Perevezentsev

Blagonravov Institute of Machine Science, Nizhnii Novgorod Branch, Russian Academy of Sciences,
ul. Belinskogo 85, Nizhnii Novgorod, 603024 Russia

Received November 28, 1995; in final form, September 17, 1996

Abstract—A model of grain-boundary sliding is suggested. The model explains experimentally observed
extremely high rates of superplastic deformation of fine-grained alloys at near-solidus temperatures.

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