1979/07/01 by F. P. Ford
Engineering · Materials Science · #Aluminum Alloy Microstructure Properties #Aluminum Alloys Composites Properties #Corrosion Behavior and Inhibition
paper · doi:10.5006/0010-9312-35.7.281
crossref issued 1979/07/01 · crossref published 1979/07/01 · crossref published-print 1979/07/01 · openalex publication_date 1979/07/01 · crossref created 2013/02/11 · crossref deposited 2025/03/18 · openalex created_date 2025/10/10 · crossref indexed 2026/07/27 · openalex updated_date 2026/07/28
Corrosion fatigue crack propagation rates for aluminum-7% magnesium in the cold worked and stabilized condition have been determined as a function of stress intensity amplitude in various chloride and sulfate solutions. Experimental variables have been electrode potential, temperature, and stressing frequency. It has been concluded that there is not a fundamental change in mechanism of environmental cracking when changing from static to dynamic stressing, but there is a change in the relative importance of the possible rate determining steps in that mechanism. It is suggested that the cracking mechanism is slip dissolution and the rate determining steps which are of importance at a given potential are the passivation rate, the oxide rupture rate, and the solution renewal rate down the crack length.