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Effect of volume fraction and geometry of pores on mechanical properties of porous bulk glassy Pd42.5Cu30Ni7.5P20 alloys

Published online by Cambridge University Press:  01 April 2006

Takeshi Wada ,
Makoto Kinaka  and
Akihisa Inoue
Takeshi Wada*
Affiliation:
Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
Makoto Kinaka
Affiliation:
Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
Akihisa Inoue
Affiliation:
Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Porous Pd42.5Cu30Ni7.5P20 bulk glassy alloy rods with porosities up to 71% were successfully prepared by water quenching in a 15 MPa hydrogen atmosphere, followed by heat treatment in a supercooled liquid state. Pores with sizes up to 80 μm were homogeneously distributed over the whole cross-sectional area. Under compressive deformation, the porous alloys with porosities exceeding 41% did not show macroscopic fracture in a wide compressive strain range up to 0.6. Mechanical tests with porous alloy rods whose pores are anisotropically oriented indicate that the plasticity of the porous alloy is strongly affected by stress concentration factor.

Keywords

AmorphousFoamStrength
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 4 , April 2006 , pp. 1041 - 1047
Copyright
Copyright © Materials Research Society 2006

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