Research on Metal Matrix Composites for Naval Aircraft Engines.

Abstract

Directionally solidified ingots of binary titanium base eutectics with iron, cobalt and nickel have been analyzed metallographically and tested in tension. Of these alloys, the one having a titanium matrix with 40% volume fraction TiFe fibers appears to have the most promising morphology. Metallographic studies of arc melted buttons of columbium base binary, ternary, and quaternary alloys indicate several eutectic alloy systems with a potential for structural applications. A study of a Cr-25Cb-34Al (wt. %) directionally solidified alloy has verified the presence of a eutectic at the composition predicted by the computer model of Kaufman and Nesor. Preliminary weight gain oxidation tests at 2200 F indicate the Cr-25Cb-34Al eutectic in the directionally solidifed condition is superior in oxidation resistance to the carbide reinforced and directionally solidified eutectics currently being developed.

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Document Details

Document Type
Technical Report
Publication Date
Aug 25, 1976
Accession Number
ADA033724

Entities

People

  • Marshall K. Thomas

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Air Platforms
  • Counter IED
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Aluminum Oxides
  • Composite Materials
  • Crystal Structure
  • High Temperature
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Working
  • Melting Point
  • Metal Matrix Composites
  • Oxidation Resistance
  • Phase Diagrams
  • Refractory Metals
  • Solid Solutions
  • Temperature Gradients
  • Transitions

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.