Fatigue of Four Stainless Steels and Three Titanium Alloys Before and After Exposure to 550 F (561 K) Up to 8800 Hours

Abstract

Fatigue and tensile sheet specimens of four steels and three titanium alloys were tested before and after exposure to 55O F (56l K) for periods up to 1 year. None of the seven materials exhibited a serious degradation in fatigue life in any of the four specimen configurations used. However, in two cases (Ti-8Al-1Mo-lV spot-welded, Ti-8A1-lMo-lV edge-notched), a slight but steady life-reduction trend was observed. The static point efficiencies, prior to exposure, of both spot-welded and fusion-welded specimens were higher for titanium alloys than for steels.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1965
Accession Number
ADA392791

Entities

People

  • Claude B. Castle
  • Walter Illg

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Alloys
  • Aluminum Alloys
  • Fabrication
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Fusion Welding
  • Heat Treatment
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Spot Welds
  • Stainless Steel
  • Stresses
  • Tensile Properties
  • Titanium Alloys
  • Welded Joints

Fields of Study

  • Materials science

Readers

  • Auditory Neuroscience/Auditory Physiology.
  • Materials Science (Mechanical Engineering).
  • Metallurgy