Effect of Vacuum Environment on Mechanical Behavior.

Abstract

The surface layer stress of titanium alloy (6Al/4V and 5Al/2.5Sn) was measured in methanol-chloride solutions as a function of voltage. The surface layer stress was found to increase markedly as the specimen became more anodic. It is proposed that stress-corrosion cracking is associated with the formation of a surface layer of critical strength to support a pileup of dislocations to cause fracture. The stress corrosion behavior of titanium and aluminum (2014-T6) was determined on specimens with and without the surface layer. A marked increase in the stress corrosion cracking resistance was achieved by eliminating the surface layer. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1973
Accession Number
AD0760529

Entities

People

  • Irvin R. Kramer

Organizations

  • Martin Marietta

Tags

DTIC Thesaurus Topics

  • Alcohols
  • Alloys
  • Aluminum
  • Chemical Compounds
  • Chlorides
  • Corrosion
  • Dislocations
  • Environment
  • Material Degradation Processes
  • Methanols
  • Resistance
  • Stress Corrosion
  • Stress Corrosion Cracking
  • Titanium
  • Titanium Alloys

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.
  • Semiconductor Device Technology