Accession Number:

ADA014611

Title:

The Influence of Loading Mode on the Stress Corrosion Susceptibility of Various Alloy/Environment Systems.

Descriptive Note:

Interim technical rept.,

Corporate Author:

MARTIN MARIETTA LABS BALTIMORE MD

Report Date:

1975-08-01

Pagination or Media Count:

35.0

Abstract:

The influence of loading mode on stress-corrosion susceptibility has been examined for the following systems Ti- 8Al 1Mo 1V alloyaqueous chlorides alpha - brassammoniacal environments, 7075-T6 Al alloy in NaClK2Cr2O7 solutions. With the exception of the alpha- brassammonia system, the stress-corrosion susceptibility of the metals was found to be much greater under tensile mode I loading than torsional mode III loading. Further, in certain instances the addition of hydrogen-recombination cathodic poisons, i.e., arsenic, was found to enhance susceptibility to cracking as a function of loading mode is interpreted to indicate that hydrogen damage is the dominant mechanism leading to failure. Implications of these results to mechanistic understanding are discussed.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE