Fabrication Of A Ni3Ai/Ai203 Unidirectional Composite By Pressure Casting

S. Nourbakhsh, F. L. Liang, H. Margolin

Research output: Contribution to journalArticlepeer-review

Abstract

A gas pressure liquid metal infiltration technique for producing fiber reinforced Ni 3AljA120 3 and NiAljA1 20 3 composites has been described. Composite bars of 9.5 mm diameter, 150 rom long were produced. It was found necessary to add 0.5 at. %Ti to both Ni3Al and NiAl alloys to obtain adequate wetting. There was a strong tendency for liquid metal infiltration along one side of the fibers causing a shift of the fibers to the opposite side. No interface reaction zone was observed at optical magnifications up to 1000X. A composite of Ni3Al containing 33 volume percent of FP fibers fractured at 890 MPa which is approximately 3 times the yield strength of the matrix IC-50(21.73AI-O.34Zr-O.lBBalance Ni at.%) + 0.5 at.%Ti.

Original languageEnglish (US)
Pages (from-to)57-78
Number of pages22
JournalAdvanced Materials and Manufacturing Processes
Volume3
Issue number1
DOIs
StatePublished - 1988

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Engineering(all)
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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