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Microstructures and mechanical properties of ultrafine-grained Ti foil processed by equal-channel angular pressing and cold rolling

Published online by Cambridge University Press:  06 January 2012

Y. T. Zhu ,
Y. R. Kolobov ,
G. P. Grabovetskaya ,
V. V. Stolyarov ,
N. V. Girsova  and
R. Z. Valiev
Y. T. Zhu
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
Y. R. Kolobov
Affiliation:
Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 2/1, Akademicheskaya, Tomsk 634021, Russia
G. P. Grabovetskaya
Affiliation:
Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 2/1, Akademicheskaya, Tomsk 634021, Russia
V. V. Stolyarov
Affiliation:
Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa 450000, Russia
N. V. Girsova
Affiliation:
Institute of Strength Physics and Materials Science, Siberian Branch of Russian Academy of Sciences, 2/1, Akademicheskaya, Tomsk 634021, Russia
R. Z. Valiev
Affiliation:
Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa 450000, Russia
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Abstract

We processed coarse-grained Ti and equal-channel angular pressing (ECAP) processed ultrafine-grained (UFG) Ti into 20-μm-thick Ti foils by cold rolling and intermediate annealing. The foils produced from rolling the UFG Ti exhibit a homogeneous nanostructure, while foils produced from rolling the coarse-grained Ti exhibit heterogeneous structures with a mixture of nanostructured regions and coarse-grained regions. The former foils also have higher strength and ductility and exhibit uniform deformation over a larger strain range at room temperature than the latter ones. This work demonstrated the advantage and viability of producing nanostructured Ti foil by rolling ECAP-processed UFG Ti stock.

Type
Articles
Information
Journal of Materials Research , Volume 18 , Issue 4 , April 2003 , pp. 1011 - 1016
Copyright
Copyright © Materials Research Society 2003

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References

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