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Research on the Basic Nature of Stress Corrosion for Various Structural Alloys at Room and Elevated Temperatures

Report Number: ASD TR 61-713 Part 2
Author(s): Frank A. Crossley
Corporate Author: Armour Research Foundation
Date of Publication: 1963-05-06
Pages: 49
Contract: AF33 616 7612
AD Number: AD0405680
Original AD Number: AD-405 680

Abstract:
Program objectives were: 91) to study the effect of microstructure on susceptibility to stress-corrosion cracking in the short-transverse direction of 7075-T6 aluminum alloy: and (2) to study the kinetics of stress-corrosion cracking at elevated temperature of candidate materials for structural applications in the trisonic transport in the presence of sea salt. It was hypothesized that the poor resistance to stress corrosion of high-strength wrought aluminum alloys was due to the layered-type of grain structure characteristic of commercial material, and long life was associated with irregular or equiaxed grain structures. The experimental results gave good support to the hypothesis

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