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Compressive properties at elevated temperatures of porous aluminum processed by the spacer method

Published online by Cambridge University Press:  01 December 2005

Masataka Hakamada ,
Tatsuho Nomura ,
Yasuo Yamada ,
Yasumasa Chino ,
Hiroyuki Hosokawa ,
Takeshi Nakajima ,
Youqing Chen ,
Hiromu Kusuda  and
Mamoru Mabuchi
Masataka Hakamada*
Affiliation:
Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Sakyo, Kyoto 606-8501, Japan
Tatsuho Nomura
Affiliation:
Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Sakyo, Kyoto 606-8501, Japan
Yasuo Yamada
Affiliation:
Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology, Moriyama, Nagoya 463-8560, Japan
Yasumasa Chino
Affiliation:
Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology, Moriyama, Nagoya 463-8560, Japan
Hiroyuki Hosokawa
Affiliation:
Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology, Moriyama, Nagoya 463-8560, Japan
Takeshi Nakajima
Affiliation:
Materials Research Institute for Sustainable Development, National Institute of Advanced Industrial Science and Technology, Moriyama, Nagoya 463-8560, Japan
Youqing Chen
Affiliation:
Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Sakyo, Kyoto 606-8501, Japan
Hiromu Kusuda
Affiliation:
Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Sakyo, Kyoto 606-8501, Japan
Mamoru Mabuchi
Affiliation:
Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Sakyo, Kyoto 606-8501, Japan
*
a)Address all correspondence to this author. e-mail: hakamada@g03.mbox.media.kyoto-u.ac.jp
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Abstract

Compressive properties at 573–773 K of porous aluminum produced by the spacer method were investigated and compared with those of bulk reference aluminum with the same chemical compositions. The stress exponent and activation energy for deformation at elevated temperatures in the porous aluminum were in agreement with those in the bulk reference aluminum. In addition, the plateau stress of the porous aluminum was comparable to the stress of the bulk reference aluminum upon compensation by the relative density. Therefore, it is conclusively demonstrated that the mechanism of deformation at elevated temperatures in the porous aluminum is the same as that in the bulk reference aluminum. This is likely due to the homogeneous microstructure in the porous aluminum produced by the spacer method.

Keywords

CellularMechanical propertiesStress/strain relationship
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 12 , December 2005 , pp. 3385 - 3390
Copyright
Copyright © Materials Research Society 2005

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References

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