ODS FeCrAlY Component Manufacturing Development.

Abstract

Process parameters were established for the fabrication of ODS FeCrAlY first stage nozzle vane material through a pilot manufacturing study and was then successfully scaled-up to full size vane blanks. Argon atomized powders were uniformly preoxidized and extruded using a modified SAP approach. Exaggerated grain growth was achieved for improved high temperature strength properties through thermomechanical processing by isothermal forging and directional recrystallization techniques. The rupture strength goal was met. The vane blanks were determined to possess a duplex crystallographic orientation of (211) and (111). The (001) orientation was the sought after direction because of the low modulus of elasticity for improved thermal fatigue resistance. The high modulus orientations have serious implications for thermal fatigue resistance. A study for the modification of crystallographic orientation was initiated. A first stage nozzle vane has been designed for the testing of ODS FeCrAlY in a TF-34 engine at skin temperatures in excess of 2100F. (Modified author abstract)

Document Details

Document Type
Technical Report
Publication Date
Nov 25, 1973
Accession Number
AD0770639

Entities

People

  • R. J. Perkins
  • Ross Allen

Organizations

  • General Electric

Tags

DTIC Thesaurus Topics

  • Directional
  • Elastic Properties
  • Fabrication
  • Grain Growth
  • High Temperature
  • Manufacturing
  • Material Forming Processes
  • Materials Processing
  • Mechanical Working
  • Modulus Of Elasticity
  • Orientation (Direction)
  • Resistance
  • Thermal Fatigue
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Aerodynamics.
  • Powder metallurgy of Titanium alloys.
  • Thermal Physics or Thermal Science.