Investigation of Processing Microstructures and Properties of Oxide Dispersion Strengthened Cobalt Alloy Extruded Shapes.

Abstract

The present study describes the development of an Oxide Dispersion Strengthened, Cobalt base alloy with the nominal composition of Co-20Ni-18Cr-4.5A1-1.75 Y2O3. The alloy was produced in extruded form from mechanically attrited powder. In the first part of this study a series of small scale (3in. dia.) extrusions were produced in order to evaluate various compositional and processing parameters. Based upon this study a single powder composition and three sets of extrusion parameters were chosen for use with full scale 7in. diameter extrusion billets. Dynamic (Mach 0.3), 2100 F oxidation tests showed the material to have excellent surface stability under these conditions, and hot corrosion testing at 1650 F showed it to be slightly superior to the analogous Ni base O.D.S. materials in this latter type of environment.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1977
Accession Number
ADA048593

Entities

People

  • R. Grierson

Organizations

  • Cabot Corporation

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force Facilities
  • Alloys
  • Chemical Analysis
  • Chemistry
  • Contracts
  • Corporations
  • Elements
  • Gas Turbines
  • Heat Resistant Alloys
  • High Temperature
  • Materials
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Modulus Of Elasticity
  • Turbines

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Powder metallurgy of Titanium alloys.