Accession Number : AD0432320


Title :   CONTROL OF STRESS CORROSION


Descriptive Note : Interim rept.


Corporate Author : ROCK ISLAND ARSENAL IL


Personal Author(s) : Wolff, R H


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/432320.pdf


Report Date : 26 Nov 1963


Pagination or Media Count : 24


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.


Descriptors :   *STEEL , *STRESS CORROSION , CRACKING(FRACTURING) , TENSILE PROPERTIES , HEAT TREATMENT , ABRASIVE BLASTING , ELECTROPLATING , ZINC COATINGS , PHOSPHATE COATINGS , PROTECTIVE TREATMENTS , ENVIRONMENTAL TESTS , COATINGS , FRACTURE(MECHANICS) , CORROSION INHIBITION


Subject Categories : Physical Chemistry


Distribution Statement : APPROVED FOR PUBLIC RELEASE