Interface structure in A6061 aluminum alloy matrix composite reinforced with aluminum borate whiskers

Masakatsu Shibata, Yoshito Takemoto

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A6061 aluminum alloy matrix composites reinforced with aluminum borate whiskers were manufactured using squeeze casting. The interface between the whisker and matrix was observed using high resolution electron microscopy. The aluminum borate whisker and magnesium in the A6061 aluminum alloy interacted during casting and the spinel (MgAl2O4) which nucleated at the interface grew during heat treatment. The whisker/spinel interface had coherency, but the whisker/matrix interface had none. Many lattice defects were observed in the spinel, and were probably produced by misfits at the whisker/spinel interface. Multi-slice simulation indicated that stacking faults are one of the defects.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Issue number1
Publication statusPublished - Jan 1 2000


ASJC Scopus subject areas

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

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