Filled Billet Oxide Dispersion Strengthened Hollow Airfoil Extrusions.

Abstract

An yttria-strengthened, mechanically attrited nickel-chromium-aluminum powder, HDA 8077, (Ni-16CR-4Al-1.5Y2O3 nominal composition) was extruded with no prior consolidation into tubes and thin-wall hollow airfoils. Through metallography, physical and mechanical property determination, and elevated temperature dynamic oxidation tests, it was determined that strong, corrosion-resistant, net airfoil shapes could be made directly from powder by the filled billet extrusion technique. Process scale-up recommendations for larger airfoils are included.

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1976
Accession Number
ADA033215

Entities

People

  • Gerald Friedman

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Aluminum
  • Chemical Compounds
  • Chromium
  • Corrosion
  • Dispersions
  • Elements
  • Extrusion
  • Mechanical Properties
  • Metallography
  • Metals
  • Ores
  • Oxidation
  • Oxides
  • Thin Walls
  • Walls

Readers

  • Aerodynamics/Aeronautics.
  • Metallurgy