Accession Number:

AD0811299

Title:

A FUNDAMENTAL INVESTIGATION OF THE NATURE OF STRESS-CORROSION CRACKING IN ALUMINUM ALLOYS

Descriptive Note:

Final rept. Jun 1965-May 1966

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OH

Report Date:

1967-01-01

Pagination or Media Count:

80.0

Abstract:

Several experimental techniques are used to study the mechanisms of stress-corrosion cracking in high purity aluminum alloys. The effect of metallurgical variables such as alloying elements Cr, Ag, Cu and heat treatments on a 4.2Zn-3.3Mg aluminum alloy are determined. Techniques used in this study include electrode polarization, autoradiographic studies, microstress studies, electron microscopy replica and transmission, metioscopy, and standard stress-corrosion testing methods. As a result of these studies, an electrochemical theory for the mechanism of stress-corrosion cracking which involves the strain induced absorption of hydrogen is found to be consistent with the observations.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE