Hot Salt Stress Corrosion of Titanium Alloys in an Adjustable Deflection, Multi-Specimen Bent Beam Test Apparatus

Abstract

B-32-A(*titanium alloys, *stress corrosion), corrosion inhibition, coatings, boron compounds, carbides, salts, environmental testsboron carbides, protective coatings, titanium alloy 5al 2.5snAn adjustable deflection, multi- specimen, bent beam test fixture was devised for conditioning sheet specimens used in the investigation of hot salt stress corrosion effects in titanium alloys. Initial tests were conducted with a Ti-5Al-2.5Sn titanium alloy at a temperature of 900F and a stress just below the yield strength. Crack developments on salt-treated surfaces were observed to increase with exposure time of 150, 500 and 1000 hours. In addition, deleterious effects of orientation and overstress were also observed. Later, efforts were made to evaluate a proprietary boron carbide coating at exposure time up to 500 hours. Preliminary results indicated the potential of the coating.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1973
Accession Number
AD0763704

Entities

People

  • Anthony K. Wong
  • Milton Levy

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Base Lines
  • Coatings
  • Heat Treatment
  • Materials
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Photographs
  • Protective Coatings
  • Surface Finishing
  • Surface Properties
  • Surface Roughness
  • Tensile Properties
  • Tensile Stress
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.