Friction stir welding in aluminum alloy foils

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  • アルミニウム合金箔材の摩擦攪拌接合
  • アルミニウムゴウキンパクザイ ノ マサツ カクハン セツゴウ

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Friction stir welding(FSW) has been applied to lap joint of 5052 aluminum foils of 0.1mm thick. The FSW equipment for foils was successfully designed in consideration of heat input per unit length of welding. The bead width was extended with increase of the indentation of the tool having a top radius of 16.3mm in FSW with a rotation speed of 120000rpm. More flash was generated as the indentation of the tool increased or the welding speed decreased in FSW with R16.3mm tool. The maximum bonding strength was obtained in FSW with R16.3mm tool, a rotation speed of 90000rpm, an indentation of 0.03mm and a welding speed of 180mm/min. Comparison of four types of tool shape suggested that R16.3mm tool would be the most appropriate for lap FSW of 5052 aluminum alloy foils.

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