Bulletin of the Polish Academy of Sciences Technical Sciences · 2012 · 71 citations · 17 references
EngineeringMaterials EngineeringMaterials ScienceMetallic MaterialsMetallurgyUltrasoundAlloysArc WeldingMetalsUltrasonicsWeldingWelding ProcessesAluminum Alloy WeldingAluminum AlloysAluminum-containing AlloysHardnessHeat-affected Zone EmbrittlementHeat-affected Zone HardnessWeldability Of AlloysWelding Metallurgy
Abstract The structure and hardness of the surface-welds and fusion-welds made on a 2017A aluminum alloy waveguide using the MIG and TIG methods with and without the participation of ultrasonic vibrations were examined. Cross-sections of the fusions and surface-welds thus obtained were observed in a microscope and the hardness distributions were determined. The aim of the study was to analyze the effects of the ultrasonic vibrations applied to the melted metal pool by a vibrating substrate which in our experiments was a waveguide. The interactions of the ultrasonic vibrations with the molten metal during its solidification and also with the heat-affected zone were examined at various phases of the vibration wave. The ultrasonic vibrations affected the structure of a weld. These changes are strongly depended on the wave phase.
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Effect of ultrasonic vibration on unmixed zone formation
Yimin Cui, C XU, Qing Han · Scripta Materialia · 2006 · 127 citations
Improving arc joining of Al to steel and Al to stainless steel
Honggang Dong, Liqun Yang, Chuang Dong et al. · Materials Science and Engineering A · 2011 · 121 citations