Process and joint quality of ultrasonic vibration enhanced friction stir lap welding
Source abstract
Abstract
In order to improve the process effectiveness and joint quality, ultrasonic vibrations were integrated with friction stir lap welding. Effect of ultrasonic exertion on the process and joint quality of AA 6061-T6 were investigated. Upon ultrasonic exertion, joints owned larger effective lap width, shorter hooks and improved strength. Weld fracture mode changed from a ductile–brittle mixed mode to a more ductile mode while the fracture path shifted from lap interface to beyond the stir zone. Material flow and interface defects were characterised using lap welded dissimilar aluminium alloy joints. Ultrasonic vibration improved the material flow and reduced the interfacial defects. Variations in failure load of joints were found in accordance with the variations in material flow and interfacial defects.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Aluminum Alloy Microstructure Properties · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
MOE Key Lab for Liquid–Solid Structure Evolution and Materials Processing, Institute of Materials Joining, Shandong University, Jinan, People's Republic of China
Funding
National Natural Science Foundation of China
References (37)
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