Accession Number:

AD0274785

Title:

INVESTIGATION OF STRESS-CORROSION CRACKING OF HIGH-STRENGTH ALLOYS

Descriptive Note:

Corporate Author:

AEROJET-GENERAL CORP AZUSA CALIF

Personal Author(s):

Report Date:

1962-04-20

Pagination or Media Count:

1.0

Abstract:

Extended stress-corrosion testing of selected unwelded bent-beam specimens of 6 high-strength alloys has continued for 33 weeks, and of U-bend specimens for 40 weeks. The alloys of AM355 and PH 15-7 Mo stainle s steel and B120VCA titanium were not found to be susceptible to stress-corrosion cracking in any of the envir nments tested, while the alloy steels of Ladish D6AC, 300M, and Vascojet 1000 had specific susceptibility in some of the environments tested. The fabrication of welded bend-beam specimens of selected materials is nearing completion, and environmental te ting is expected to begin shortly. The evaluation of several coatings for preventing stress-corrosion cracking was initiated, and, on the basis of the brief data accumulated to date, indications are that the coatings are beneficial, at least in extending the time-to-failure from stress-corrosion cracking. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE