DEVELOPMENT OF CHROMIUM COMPOSITE ALLOY WITH HIGH TEMPERATURE OXIDATION AND EROSION RESISTANCE

Abstract

The effects of extrusion and rolling variables on the quality and mechanical behavior of a powder metallurgy chromium-magnesium oxide composite were studied. Hot rolling at 2200 F and finish rolling at 900 F with reductions of 40 to 55% provided sound, contamination free sheet having a ductile-brittle transition temperature of 45 F in the recrystallized condition. Oxidation, erosion and nitridation behavior were observed to be improved over unalloyed chromium. Preliminary studies indicated that a strain aging phenomenon may be responsible for the brittle behavior observed with as rolled and stress relieved sheets. Further work is required to resolve this anomaly. The results of this initial program indicated that the full potential of chromium composites can be realized additional development directed toward strengthening, and further retardation of nitrogen diffusion at elevated temperature.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1963
Accession Number
AD0408957

Entities

People

  • James F. Masterson

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Chemistry
  • Composite Materials
  • Erosion Resistance
  • Heat Treatment
  • High Temperature
  • Low Temperature
  • Magnesium Compounds
  • Materials
  • Mechanical Working
  • Resistance
  • Surface Properties
  • Tensile Properties
  • Tensile Strength
  • Transition Temperature
  • Transitions
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Metallurgy
  • Reinforced Composite Materials