Accession Number:

AD0849129

Title:

Mechanical Properties, Including Fracture Toughness and Fatigue, Corrosion Characteristics and Fatigue-Crack Propagation Rates of Stress-Relieved Aluminum Alloy Hand Forgings

Descriptive Note:

Technical management rept. no. 3, 15 Aug-15 Nov 1968

Corporate Author:

ALUMINUM CO OF AMERICA ALCOA CENTER PA ALCOA LABS

Report Date:

1968-11-01

Pagination or Media Count:

22.0

Abstract:

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.

Subject Categories:

  • Properties of Metals and Alloys
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE