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Effects of hot-salt stress corrosion on titanium alloys.Susceptibility of titanium alloys to hot-salt stress-corrosion cracking increased as follows: Ti-2Al-11Sn-5Zr-1Mo-0.2Si (679), Ti-6Al-2Sn-4Zr-2Mo (6242), Ti-6Al-4V (64), Ti-6Al-4V-3Co (643), Ti-8Al-1Mo-1V (811), and Ti-13V-11Cr-3Al (13-11-3). The Ti-5Al-6Sn-2Zr-1Mo-0.25Si (5621S) alloy was both the least and most susceptible, depending on heat treatment. Such rankings can be drastically altered by heat-to-heat variations and processing conditions. Residual compressive stresses reduce susceptibility to stress-corrosion. Detection of substantial concentrations of hydrogen in all corroded alloys confirmed the generality of a previously proposed hydrogen embrittlement mechanism.
Document ID
19730028466
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Gray, H. R.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 7, 2013
Publication Date
November 1, 1972
Publication Information
Publication: Metals Engineering Quarterly
Volume: 12
Subject Category
Materials, Metallic
Accession Number
73A13268
Distribution Limits
Public
Copyright
Other

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