MATERTRANS : Vol. 47 (2006) , No. 9 pp.2203-2207

Size Effects on Tensile Strength of Lotus-Type Porous Copper

Hidekazu Sueno¹⁾, Masakazu Tane¹⁾, Jae-Soung Park¹⁾, Soong-Keun Hyun¹⁾ and Hideo Nakajima¹⁾

1) The Institute of Scientific and Industrial Research, Osaka University

(Received February 28, 2006)
(Accepted May 15, 2006)

Effects of specimen thickness on the tensile strength of lotus-type porous copper were investigated. The ultimate tensile strength in the direction perpendicular to the longitudinal axis of pores hardly depends on the thickness of a specimen when the width of the specimen is large enough compared with the pore diameter, while the ultimate tensile strength increases with an increase in the thickness when the width is not large enough compared with the pore diameter. The 0.2% offset strength in the direction and strain at the peak stress depend on the thickness of specimens; the 0.2% offset strength decreases with an increase in the thickness, and the strain at peak stress increases with the increase in the thickness.

Keywords:

lotus-type porous metals, copper, size effect, tensile strength