Cyclic Deformation, Damage, and Effects of Environment in the NI3Al Ordered Alloy at Elevated Temperatures

Abstract

A basic program is defined to investigate cyclic deformation, damage accumulation, and fatigue crack propagation (FCP) In the ordered Ni3Al system as affected by composition, temperature, and environment. While this class of ordered alloys shows great promise for elevated temperature applications in jet and rocket engines, problems of brittleness and damage by hostile environments have been encountered in monotonic tensile deformation. The basic mechanisms of cyclic deformation and fatigue crack propagation have not been fully investigated; yet must be understood if these materials are to be used in advanced applications. Nickel alloys.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1988
Accession Number
ADA198500

Entities

People

  • Stephen D. Antolovich

Organizations

  • Georgia Tech

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Alloys
  • Brittleness
  • Chemistry
  • Classification
  • Contracts
  • Crack Propagation
  • Cracks
  • Electron Microscopes
  • Elements
  • Engines
  • Materials
  • Materials Engineering
  • Powder Metallurgy
  • Powders
  • Rocket Engines
  • Rockets
  • Solid Solutions

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy