Dynamic compression properties of porous aluminum with functionally graded pore structures

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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)576-581
Number of pages6
JournalKeikinzoku/Journal of Japan Institute of Light Metals
Volume67
Issue number11
DOIs
Publication statusPublished - 2017 Jan 1

Fingerprint

Pore structure
Aluminum
Compaction
Porosity
Friction stir welding
Stress-strain curves
Tomography
X rays

Keywords

  • Dynamic compression test
  • Foam
  • Friction stir welding
  • Functionally graded materials
  • X-ray computed tomography

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Dynamic compression properties of porous aluminum with functionally graded pore structures. / Hangai, Yoshihiko; Suto, Shun; Utsunomiya, Takao; Kawashima, Hisanobu; Kuwazuru, Osamu; Yoshikawa, Nobuhiro.

In: Keikinzoku/Journal of Japan Institute of Light Metals, Vol. 67, No. 11, 01.01.2017, p. 576-581.

Research output: Contribution to journalArticle

Hangai, Yoshihiko ; Suto, Shun ; Utsunomiya, Takao ; Kawashima, Hisanobu ; Kuwazuru, Osamu ; Yoshikawa, Nobuhiro. / Dynamic compression properties of porous aluminum with functionally graded pore structures. In: Keikinzoku/Journal of Japan Institute of Light Metals. 2017 ; Vol. 67, No. 11. pp. 576-581.
@article{8a78a4501d62406999e6b7b4e681fa83,
title = "Dynamic compression properties of porous aluminum with functionally graded pore structures",
abstract = "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.",
keywords = "Dynamic compression test, Foam, Friction stir welding, Functionally graded materials, X-ray computed tomography",
author = "Yoshihiko Hangai and Shun Suto and Takao Utsunomiya and Hisanobu Kawashima and Osamu Kuwazuru and Nobuhiro Yoshikawa",
year = "2017",
month = "1",
day = "1",
doi = "10.2464/jilm.67.576",
language = "English",
volume = "67",
pages = "576--581",
journal = "Keikinzoku/Journal of Japan Institute of Light Metals",
issn = "0451-5994",
publisher = "Keikinzoku Gakkai/Japan Institute of Light Metals",
number = "11",

}

TY - JOUR

T1 - Dynamic compression properties of porous aluminum with functionally graded pore structures

AU - Hangai, Yoshihiko

AU - Suto, Shun

AU - Utsunomiya, Takao

AU - Kawashima, Hisanobu

AU - Kuwazuru, Osamu

AU - Yoshikawa, Nobuhiro

PY - 2017/1/1

Y1 - 2017/1/1

N2 - 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.

AB - 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.

KW - Dynamic compression test

KW - Foam

KW - Friction stir welding

KW - Functionally graded materials

KW - X-ray computed tomography

UR - http://www.scopus.com/inward/record.url?scp=85040225231&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040225231&partnerID=8YFLogxK

U2 - 10.2464/jilm.67.576

DO - 10.2464/jilm.67.576

M3 - Article

VL - 67

SP - 576

EP - 581

JO - Keikinzoku/Journal of Japan Institute of Light Metals

JF - Keikinzoku/Journal of Japan Institute of Light Metals

SN - 0451-5994

IS - 11

ER -