Communication: Effect of the amount of gases on the foaming efficiency of porous aluminum using die castings fabricated by friction stir processing

Yoshihiko Hangai, Hiroki Kato, Takao Utsunomiya, Soichiro Kitahara

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Porous aluminum was fabricated by friction stir processing using the gases intrinsically contained in aluminum alloy die castings without the use of a blowing agent. The effect of the amount of gases contained in the die castings on the foaming efficiency was nvestigated. Although the expansion efficiency of each type of gas was not clear, the total amount of gases was sufficient to obtain high porosity. A porosity of approximately 60 pct was obtained with highly spherical and fine pores.

Original languageEnglish
Pages (from-to)1883-1886
Number of pages4
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Issue number8
Publication statusPublished - 2010 Aug 1


ASJC Scopus subject areas

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

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