Evaluation of anisotropic effective stress-strain criteria for the biaxial yield and flow of 2024 aluminum tubes

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · J. Eng. Mater. Technol.; (United States)

DOI:https://doi.org/10.1115/1.3225653· OSTI ID:5995474

Stout, M G; Hecker, S S; Bourcier, R

2024 aluminum tubes, heat treated to a T6 and T8 temper, were tested in combinations of tension-internal pressure and tension-torsion loading. Yield loci and flow behavior were determined for both modes of loading and compared to theoretical predictions. Both tempers of 2024 aluminum exhibited crystallographic textures and anisotropic yield and flow. Hill's quadratic yield criterion and the associated flow rule under-estimate balanced biaxial yield and flow, which is consistent with hydraulic bulge data on other face-centered cubic metals. Hill's nonquadratic criterion, which adds one additional parameter, and Bassani's criterion, which adds two parameters, predict the anisotropic yield behavior much more accurately. Predictions of the complete flow behavior, including strain paths, with these anisotropic criteria could be improved markedly by including provisions for planar anisotropy.

• Research Organization: Los Alamos National Lab., NM
• OSTI ID: 5995474
• Journal Information: J. Eng. Mater. Technol.; (United States), Journal Name: J. Eng. Mater. Technol.; (United States) Vol. 105; ISSN JEMTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALUMINIUM
ANISOTROPY
ELEMENTS
HEAT TREATMENTS
MECHANICAL PROPERTIES
METALS
STRAINS
STRESS ANALYSIS
TENSILE PROPERTIES
TORSION
TUBES