Mechanical Properties, Including Fracture Toughness and Fatigue, Corrosion Characteristics and Fatigue-Crack Propagation Rates of Stress-Relieved Aluminum Alloy Hand Forgings
Technical management rept. no. 3, 15 Aug-15 Nov 1968
ALUMINUM CO OF AMERICA ALCOA CENTER PA ALCOA LABS
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Except for a few tests, the tensile, compressive, shear and bearing properties were determined for all but three of a total of forty 2014-T652, 2024-T852, 7075-T7352 and 7079-T652 hand forgings scheduled for test. Ratios among these properties were calculated. Plane-strain fracture-toughness values were determimed for two of the hand forgings. The results of axial-stress fatigue tests R 0.0 of smooth specimens are presented. The preparation of specimens for the stress-corrosion and exfoliation tests was initiated. Tests of the 6x24-in. 2014-T652 hand forging are in progress to study the effects of notch geometry, specimen length and stress on the rate of fatigue crack propagation.
- Properties of Metals and Alloys