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Nanostructures in Ti processed by severe plastic deformation

Published online by Cambridge University Press:  31 January 2011

Y. T. Zhu ,
J. Y. Huang ,
J. Gubicza ,
T. Ungár ,
Y. M. Wang ,
E. Ma  and
R. Z. Valiev
Y. T. Zhu
Affiliation:
Materials Science and Technology Division, MS G755, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
J. Y. Huang
Affiliation:
Materials Science and Technology Division, MS G755, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
J. Gubicza
Affiliation:
Department of General Physics, Eötvös University, Budapest, P.O. Box 32, H-1518, Hungary
T. Ungár
Affiliation:
Department of General Physics, Eötvös University, Budapest, P.O. Box 32, H-1518, Hungary
Y. M. Wang
Affiliation:
Department of Materials Science and Engineering, The John Hopkins University, Baltimore, Maryland 21218
E. Ma
Affiliation:
Department of Materials Science and Engineering, The John Hopkins University, Baltimore, Maryland 21218
R. Z. Valiev
Affiliation:
Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa 450000, K. Marksa 12, Russia
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Abstract

Metals and alloys processed by severe plastic deformation (SPD) can demonstrate superior mechanical properties, which are rendered by their unique defect structures. In this investigation, transmission electron microscopy and x-ray analysis were used to systematically study the defect structures, including grain and subgrain structures, dislocation cells, dislocation distributions, grain boundaries, and the hierarchy of these structural features, in nanostructured Ti produced by a two-step SPD procedure—warm equal channel angular pressing followed by cold rolling. The effects of these defect structures on the mechanical behaviors of nanostructured Ti are discussed.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 8 , August 2003 , pp. 1908 - 1917
Copyright
Copyright © Materials Research Society 2003

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