ArticleMaterials (Basel, Switzerland)2017
Microstructure and Mechanical Properties of an Ultrasonic Spot Welded Aluminum Alloy: The Effect of Welding Energy.
Article in Materials (Basel, Switzerland), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- The Investigation of the Sensitivity of the Compliance to the Shape of the Spot in Welded Thermoplastic Single-Lap Shear (SLS) Joints.Materials (Basel, Switzerland) · 2026Article
- Inspection of Spot Welded Joints with the Use of the Ultrasonic Surface Wave.Materials (Basel, Switzerland) · 2023Article
- Hardening of Bimetallic Wires from Secondary Materials Used in the Construction of Power Lines.Materials (Basel, Switzerland) · 2022Article
- Adhesive Joints of Additively Manufactured Adherends: Ultrasonic Evaluation of Adhesion Strength.Materials (Basel, Switzerland) · 2022Article
- Fracture Characteristics and Analysis in Dissimilar Cu-Al Alloy Joints Formed via Electromagnetic Pulse Welding.Materials (Basel, Switzerland) · 2019Article
- Use of Ultrasound in Reconditioning by Welding of Tools Used in the Process of Regenerating Rubber.Materials (Basel, Switzerland) · 2018Article
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Authors and funding
3 authors.
Funding
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Abstract
The aim of this study is to evaluate the microstructures, tensile lap shear strength, and fatigue resistance of 6022-T43 aluminum alloy joints welded via a solid-state welding technique-ultrasonic spot welding (USW)-at different energy levels. An ultra-fine necklace-like equiaxed grain structure is observed along the weld line due to the occurrence of dynamic crystallization, with smaller grain sizes at lower levels of welding energy. The tensile lap shear strength, failure energy, and critical stress intensity of the welded joints first increase, reach their maximum values, and then decrease with increasing welding energy. The tensile lap shear failure mode changes from interfacial fracture at lower energy levels, to nugget pull-out at intermediate optimal energy levels, and to transverse through-thickness (TTT) crack growth at higher energy levels. The fatigue life is longer for the joints welded at an energy of 1400 J than 2000 J at higher cyclic loading levels. The fatigue failure mode changes from nugget pull-out to TTT crack growth with decreasing cyclic loading for the joints welded at 1400 J, while TTT crack growth mode remains at all cyclic loading levels for the joints welded at 2000 J. Fatigue crack basically initiates from the nugget edge, and propagates with "river-flow" patterns and characteristic fatigue striations.
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