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New trends in superplasticity in SPD-processed nanostructured materials

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Published/Copyright: May 23, 2013

Abstract

Recent studies have revealed that bulk nanostructured metals and alloys produced by severe plastic deformation can demonstrate extraordinary superplasticity at low temperatures and/or high strain rates. This work presents new results on superplasticity in several nanostructured Al and Ti alloys focusing on microstructural evolution and strain hardening, as well as the challenges of their application. Grain refinement in these alloys was accomplished using severe plastic deformation techniques. Subsequent superplastic deformation allowed not only to attain their efficient forming, but also to improve the ultrafine-grained structure and to obtain enhanced mechanical properties in the articles produced. The results demonstrate the possibilities of new applications of superplastic forming using bulk nanostructured materials.


Correspondence address, Prof. Ruslan Valiev, Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, 12 K. Marx str., Ufa 450000, Russia, Tel./Fax: +73472733422, E-mail:

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Received: 2006-11-22
Accepted: 2007-1-31
Published Online: 2013-05-23
Published in Print: 2007-04-01

© 2007, Carl Hanser Verlag, München

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