Accession Number : AD0738450
Title : Mechanism of Fatigue Enhancement in Selected High Strength Aluminum Alloys.
Descriptive Note : Progress rept.,
Corporate Author : NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AERO MATERIALS DEPT
Personal Author(s) : Trabocco,Ronald E.
Report Date : 10 DEC 1971
Pagination or Media Count : 42
Abstract : The initial phase of an investigation concerned with the mechanism of fatigue enhancement in selected high strength/weight aluminum alloys was completed. Data indicates that in both X7080-T7 and X 7050, aluminum alloys fatigue enhancement is related to unique microstructures. In the case of the X7080 Al alloy it is the presence of aligned light etching regions and in the X 7050 alloy, it is the directional proliferation of precipitates predominately at grain boundaries. (Author)
Descriptors : (*ALUMINUM ALLOYS, FATIGUE(MECHANICS)), MICROSTRUCTURE, FRACTURE(MECHANICS), AIRFRAMES
Subject Categories : Properties of Metals and Alloys
Distribution Statement : APPROVED FOR PUBLIC RELEASE