FRACTURE TOUGHNESS, FATIGUE AND CORROSION CHARACTERISTICS OF HIGH STRENGTH ALUMINUM EXTRUSIONS AND PLATE.
Abstract
The X7080 11/16x16-in. extruded panels and 3-1/2x7-1/2-in. extruded bars have been aged to the T7E42 temper, so that all test samples are now qualified. The chemical compositions and tensile properties of all test samples have been determined and are reported. The results of the accelerated exfoliation tests of the 1/2-in. and 1-3/8-in. X7080-T7E41 and 7178-T651 plate samples are reported, along with some stress-corrosion test results for these samples. Axial-stress fatigue curves and modified Goodman diagrams have been prepared for the 1-3/8-in. X7080-T7E41 and 7178-T651 plate, and for the 11/16x16-in. 7075-T6510, 7075-T73510, and 7178-T6510 extruded panels. Some fatigue crack propagation test results for the 1-3/8-in. X7080-T7E41 and 7178-T651 plate are also reported. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 27, 1968
- Accession Number
- AD0831744
Entities
People
- B. W. Lifka
- Glenn E. Nordmark
- J. G. Kaufman
- P. E. Schilling
Organizations
- Alcoa