EVALUATION OF THE STRESS CORROSION SUSCEPTIBILITY OF TITANIUM SHEET ALLOYS COATED WITH HIGH TEMPERATURE SEALANTS.

Abstract

Screening tests on self-stressed beam specimens were conducted using cyclic temperature exposures to determine the stress-corrosion susceptibility of titanium alloys in contact with high temperature fuel tank sealants. Fluorinated Viton type sealants produced a relatively high degree of stress-corrosion attack while the titanium alloys were relatively unaffected by a polyimide sealant. The duplex annealed Ti-8Al-1Mo-1V alloy and the Ti-6Al-4V alloy showed the greatest resistance to stress-corrosion attack while the beta alloy Ti-13V-11Cr-3Al was the most susceptible. Precracked specimens under static load and constant temperature were also used to evaluate stress-corrosion susceptibility. Although the relative material ratings obtained with the precracked specimens were comparable to the self-stressed specimen, the failures in precracked specimens occurred in substantially shorter test times. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1967
Accession Number
AD0818082

Entities

People

  • Charles F. Barth
  • Edward A. Steigerwald

Tags

DTIC Thesaurus Topics

  • Alloys
  • Corrosion
  • Fuel Tanks
  • High Temperature
  • Material Degradation Processes
  • Materials
  • Resistance
  • Static Loads
  • Stress Corrosion
  • Test And Evaluation
  • Titanium
  • Titanium Alloys

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Polymer Science and Engineering.