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Deformation-induced surface corrugation of superplastic ceramics

Published online by Cambridge University Press:  31 January 2011

Hiroyuki Muto ,
Takatoshi Futami  and
Motosugu Sakai
Hiroyuki Muto
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441–8580, Japan
Takatoshi Futami
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441–8580, Japan
Motosugu Sakai*
Affiliation:
Department of Materials Science, Toyohashi University of Technology, Tempaku-cho, Toyohashi 441–8580, Japan
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A new finding is reported for the surface corrugation induced in the superplastic deformation and flow of 3 mol% yttria-partially stabilized tetragonal zirconia polycrystal and β-spodumene glass ceramic, the former including no secondary phase and the latter having a plenty of glassy phase at grain boundaries. A significant test specimen size effect on the resistance to superplastic deformation is also addressed. These findings are related to the microscopic processes and mechanisms of cooperative grain-boundary sliding.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 16 , Issue 7 , July 2001 , pp. 1879 - 1882
Copyright
Copyright © Materials Research Society 2001

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