Experimental Analysis on Fatigue Life Assessment of Dissimilar Aluminum Alloys Weld Joints under Four-Point Rotating Bending Condition

Industrial applications often require welded joints of dissimilar metals to perform reliably under adverse working conditions. Such conditions demand high resistance to failure modes, such as fatigue, corrosion, and creep. In applications involving intense vibrational and cyclic loading conditions,...

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Bibliographic Details
Published in:Applied sciences 2022-05, Vol.12 (9), p.4408
Main Authors: Hashir, Muhammad, Rehman, Tauseef-ur, Kanti, Praveen, Javaid, Muhammad Yasar, Park, Cheol-Woo
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Aluminum alloys
Bending
Comparative studies
Corrosion resistance
Crack initiation
Crack propagation
Creep (materials)
Cyclic loads
dissimilar aluminum joints
Dissimilar material joining
Dissimilar metals
Failure modes
fatigue
Fatigue life assessment
Fatigue strength
Fillers
Finite element analysis
Friction stir welding
Friction welding
Gas tungsten arc welding
Geometry
High resistance
Industrial applications
Life assessment
light-weight structures
Materials fatigue
Mechanical properties
Metal fatigue
Metals
Microstructure
Propagation
Residual stress
Rotation
S N diagrams
Stainless steel
Stress concentration
Taguchi methods
TIG welding
Tungsten
Variables
Welded joints
Welding
Working conditions
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Summary:Industrial applications often require welded joints of dissimilar metals to perform reliably under adverse working conditions. Such conditions demand high resistance to failure modes, such as fatigue, corrosion, and creep. In applications involving intense vibrational and cyclic loading conditions, high strength-to-weight ratio metals, including aluminum, are more vulnerable to fatigue failure. This study investigates the fatigue strength of base metals and tungsten inert gas welded joints of the two most widely used aluminum alloys, AA7075 and AA2024, under four-point rotating bending. For the comparative study, these dissimilar alloys were joined together by using two different filler rods, AA4047 and AA4043, under similar welding conditions. SN curves for all the samples were generated through the experimental iterations. A comparison of different results shows that welded samples have better fatigue strength than the base metals, while, as a filler, AA4047 has better resistance to fatigue fracture than AA4043.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12094408