Effects of the Density on Compressive Properties in Cellular Aluminum Produced by the Sintering Method

Cui'e Wen; Yasuo Yamada; Tadashi Asahina; Kiyotaka Kato; Tutomu Sonoda; Akira Watazu; Mamoru Mabuchi

doi:10.2320/matertrans.45.327

Cui'e Wen, Yasuo Yamada, Tadashi Asahina, Kiyotaka Kato, Tutomu Sonoda, Akira Watazu, Mamoru Mabuchi

Author information

Cui'e Wen
Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology (AIST)
Yasuo Yamada
Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology (AIST)
Tadashi Asahina
Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology (AIST)
Kiyotaka Kato
Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology (AIST)
Tutomu Sonoda
Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology (AIST)
Akira Watazu
Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology (AIST)
Mamoru Mabuchi
Institute for Structural and Engineering Materials, National Institute of Advanced Industrial Science and Technology (AIST)

Keywords: porous material, aluminum, sintering, compressive test, mechanical properties, plastic collapse

JOURNAL FREE ACCESS

2004 Volume 45 Issue 2 Pages 327-329

DOI https://doi.org/10.2320/matertrans.45.327

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Abstract

The cellular aluminum materials with relative densities of 0.1∼0.25 were fabricated by the sintering method and effects of the density on mechanical properties of the cellular aluminum were investigated by compressive tests. The cellular aluminum exhibited a plateau region with a nearly constant flow stress. The stress in the plateau region increased with increasing relative density, on the other hand, the densification strain decreased with increasing relative density. Observation of the deformed cells revealed that the cell walls were bent. Besides, the stress in the plateau region was proportional to 1.9 power of the density. These suggest that plastic collapse is dominated by bending of the cell walls for the cellular aluminum produced by the sintering method.

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