Dynamic compression properties of porous aluminum with functionally graded pore structures

Yoshihiko Hangai, Shun Suto, Takao Utsunomiya, Hisanobu Kawashima, Osamu Kuwazuru, Nobuhiro Yoshikawa

研究成果: Article査読

抄録

Functionally graded (FG) porous aluminum (Al), consisting of a high porosity layer and low porosity layer in a single porous Al, was fabricated by a friction stir welding (FSW). From X-ray computed tomography (CT) observations of the pore structures of fabricated FG porous Al, it was found that the fabricated FG porous Al had two layers with high porosity of large pore diameter layer and low porosity of small pore diameter layer. From compression tests of the fabricated FG porous Al, the deformation started from the high porosity layer then spread to the low porosity layer. The stress-strain curves obtained in the dynamic compression tests revealed that the stress of the plateau region was lower during the deformation of the high porosity layer than that during the deformation of the low porosity layer. The stresses and absorbed energies in those two plateau regions during such deformations were almost the same as those of the uniform porous Al.

本文言語English
ページ(範囲)576-581
ページ数6
ジャーナルKeikinzoku/Journal of Japan Institute of Light Metals
67
11
DOI
出版ステータスPublished - 2017

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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