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- Title
Effect of artificial aging time on torsional fatigue life and cyclic behavior of AA6351 aluminum alloy and evaluation of estimation methods.
- Authors
Betemps, Maurício Ireno; Haskel, Tatiane; Barbieri, Renato; Verran, Guilherme Ourique
- Abstract
The effects of artificial‐aging time on monotonic properties and torsional fatigue of AA6351 aluminum alloy were studied in this paper. Fatigue tests were carried out by the strain‐controlled condition. Monotonic and cyclic torsional behavior, fatigue life, and estimation methods were verified. Results showed the distance between monotonic and cyclic curves progressively decreased as aging time increased from 1 to 2 and 6 h at 170°C. The yield strength values were subsequently 74.5, 110.7, and 142.5 MPa for monotonic torsion and 127, 145, and 160 MPa for cyclic torsion test (half‐life). Alloy in all aging times showed similar fatigue life in high cycle (N f > 105 cycles), and time 1 h, longer fatigue life in low cycle (Nf < 104 cycles). All specimens presented cyclic hardening at strain amplitudes ranges tested. The estimation methods showed good prediction for the fatigue parameters. Highlights: Torsional fatigue of AA6351 alloy for different artificial aging times was studied.Monotonic and cyclic behavior, fatigue life, and estimation methods were verified.The alloy with 1 h of aging presented continuous cyclic hardening and longer fatigue life in LCF.Estimation methods showed good prediction for the fatigue parameters.
- Subjects
FATIGUE life; CYCLIC fatigue; ALUMINUM alloys; ALUMINUM alloy fatigue; STRAINS &; stresses (Mechanics); TORSION; HIGH cycle fatigue
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2023, Vol 46, Issue 8, p2895
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/ffe.14051