Fabrication of composite structural material with ADC12 porous aluminum and dense steel by friction stir welding route

Yoshihiko Hangai, Nobuyuki Ishii, Shinji Koyama, Takao Utsunomiya, Soichiro Kitahara

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Porous metal is the multifunctional material with both light weight and high energy absorption properties. In this study, a composite structural material, which consists of ADC12 porous aluminum and dense steel plates, was fabricated using friction stir welding (FSW). ADC12 porous aluminum was fabricated by ADC12 aluminum alloy die castings containing large amount of gases without using blowing agent. It is expected that both fabricating precursor of ADC12 porous aluminum and bonding the precursor to steel can be conducted simultaneously by FSW. Composite material having a porosity of approximately 60% can be obtained at a holding temperature of 948 K and a holding time of 8 min. Fe-Al based intermetallic compound (IMC) layer with the thickness of approximately 20 m was observed at the interface. It was shown that IMC layer was formed at the foaming (heating) process by diffusion-limited process.

Original languageEnglish
Pages (from-to)349-354
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume76
Issue number5
DOIs
Publication statusPublished - 2012 May 1

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Keywords

  • Composite structural material
  • Diffusion bonding
  • Foam
  • Friction stir welding
  • Porous metals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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