Wpływ fazy drgań ultradźwiękowych na strukturę i twardość napoin stopu aluminium 2017A
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Abstract
W artykule przedstawiono wyniki badań struktury i twardości napoin uzyskanych metodami MIG na falowodzie w kształcie walca ze stopu aluminium 2017ô°‚. Badania miały charakter porównawczy i polegały na zestawieniu wyników uzyskanych napoin ze wspomaganiem drganiami ultradźwiękowymi oraz bez stosowania drgań. ô°–Celem zaprezentowanych badań było określenie wpływu fazy drgań ultradźwiękowych na strukturę i twardość uzyskanych napoin. Budowa strukturalna i twardość napoin uzyskanych z zastosowaniem drgań wykazywały zależność od ich fazy.
Effects of the ultrasonic vibrations phase on structure and hardness surface-welds of 2017a aluminum alloy
Tô°ƒhe structure and hardness of the surface-welds and fusion-welds made on a 2017ô°‚ aluminum alloy waô°veguide using the MIG method with and without the participation of ultrasonic ô°vibrations were eô°©xamined. ô°–ross-sections of the fusions and surface-welds thus obtained were obserô°ved in a microscope and the hardness distributions were determined. ô°ƒThe aim of the study was to analyze the effects of the ultrasonic ô°vibrations applied to the melted metal pool by a ô°vibrating substrate which in our exô°©periments was a wavô°eguide. Tô°ƒhe interactions of the ultrasonic ô°vibrations with the molten metal during its solidifiô°§cation and also with the heat-affected zone were eô°©xamined at ô°various phases of the vô°ibration wavô°e. ô°ƒThe ultrasonic vô°ibrations affected the structure of weld. ô°ƒThese changes are strongly depended of ô°vibration wavô°e phase.
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