An Investigation of the Structure and High Temperature Mechanical Properties of Oxide Dispersion Strengthened Alloys.

Abstract

The structure and high temperature mechanical properties of oxide dispersion strengthened alloys are being studied. We have observed and studied superplastic properties in fine grained MA 6000 and MA 754. These properties have been described by model which couples dislocation and diffusional creep. The creep properties of coarse grained MA 754 are also being studied. We have observed that cavitation contributes to the creep rate at low stresses and high temperatures and that grain boundary degradation occurs by diffusional processes. Work on the structure and properties of A1-Fe-Ce alloys is just starting.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA125199

Entities

People

  • William D. Nix

Organizations

  • Stanford University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Alloys
  • Creep
  • Creep Strength
  • Crystals
  • Dispersions
  • Grain Size
  • High Temperature
  • Materials
  • Materials Engineering
  • Materials Science
  • Mechanical Properties
  • Physical Metallurgy
  • Physical Properties
  • Solid Solutions
  • Stresses
  • Transitions

Fields of Study

  • Materials science

Readers

  • Powder metallurgy of Titanium alloys.