Accession Number:

AD0432320

Title:

CONTROL OF STRESS CORROSION

Descriptive Note:

Interim rept.

Corporate Author:

ROCK ISLAND ARSENAL IL

Personal Author(s):

Report Date:

1963-11-26

Pagination or Media Count:

24.0

Abstract:

This study of the control of stress corrosion cracking susceptibility of steels by application of protective coatings was designed to use abrasive blasted specimens to simulate more nearly the surfaces and conditions of a manufacturing operation. Initial work was conducted using specimens of aircraft quality 4130 alloy sheet steel, heat treated to 200,000 psi yield strength. Zinc was chosen as protective coating and was applied to abrasive blasted bent beam specimens in three forms by zinc electroplating, zinc phosphatizing, and by zinc dust dispersion. Coated bent beam specimens, tensile loaded at 75 of yield strength were placed in high humidity and in semi-industrial outdoor exposure. Control specimens in as heat treated condition have failed in both atmospheres. Tests are continuing.

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE