MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Effect of Pore Morphology on Compressive Yield Strength of Lotus-Type Porous Copper with Various Specimen Sizes
Jae-Soung ParkSoong-Keun HyunHidekazu SuenoMasakazu TaneHideo NakajimaYong-Su UmBo-Young HurFumio Ono
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2006 Volume 47 Issue 9 Pages 2208-2212

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Abstract

Lotus-type porous copper with long cylindrical pores aligned in one direction parallel to the solidification direction was fabricated by unidirectional solidification of the melt in a mixed gas of hydrogen and argon. Compression tests were performed in the direction parallel to the cylindrical pores in order to investigate the relationship between the specimen size and compressive yield strength. The compressive yield strengths and the standard deviation decrease with an increase in specimen size. Increments of the standard deviation are caused by the standard deviation of porosity occurred by inhomogeneous pore diameter and irregular pore arrangement.

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© 2006 The Japan Institute of Metals and Materials
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