Consumable Tool for Coating Deposition by Joint Deformation of the Base and Tool Materials
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A coating made of an Al–5Mg aluminum alloy is deposited onto a substrate of the same alloy due to the joint deformation of the base and tool materials via friction. A mathematical simulation is used to choose the geometry of the tool that ensures its operability and stability during coating deposition. One-layer and multilayer coatings and butt joints of 2-mm-thick sheets are formed. The joints have a fine-grained structure with the grain size that is smaller than the grain size in the substrate by a factor of 5–10. The microhardness distribution across the deposited layers is nonuniform: the hardness increases from the substrate to the upper layer.
Keywords:friction surfacing consumable tool for friction stir welding Al–Mg aluminum alloys welding
This work was performed in terms of the federal program Research and Development in the Priority Fields of the Russian Scientific and Technological Complex in 2014–2020 (project no. RFMEFI57517X0155).
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