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):

Report Date:

1971-12-10

Pagination or Media Count:

42.0

Abstract:

The initial phase of an investigation concerned with the mechanism of fatigue enhancement in selected high strengthweight 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

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE