軟鋼と5052アルミニウム合金の超音波接合過程の解析

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タイトル別名
  • Analysis of ultrasonic welding process of mild steel and 5052 aluminum alloy
  • ナンコウ ト 5052 アルミニウム ゴウキン ノ チョウオンパ セツゴウ カテイ ノ カイセキ

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抄録

Ultrasonic welding of mild steel sheet <tt>(</tt>SPCC<tt>) </tt>and aluminum alloy sheet <tt>(</tt>A5052<tt>) </tt>was conducted using two di−erent weld tips of a knurled tip <tt>(</tt>K-tip<tt>) </tt>and a curved shape tip without knurled edges <tt>(</tt>C-tip<tt>)</tt>. Behaviors of the weld tip and the welded materials during the weld process were analyzed using a high speed camera observation and an image correlation. The C-tip welding shows a completely di−erent displacement behavior from the K-tip welding; a relative motion between the tool tip and A5052 in contact with the tip predominantly occurs in the C-tip in contrast to a relative motion between A5052 and SPCC observed in the K-tip. The joint strength using the C-tip was higher than that using the K-tip under the weld conditions in this study. It is demonstrated that the relative motion behavior in the C-tip causes a macroscopic deformation of A5052 in the vibration direction. This phenomenon promotes growth of a bonded region, resulting in the increase of joint strength. It is surmised that Fe-Al intermetallic layer forms at the weld interface, and the joint strength consequently decreases for the longer weld time condition.

収録刊行物

  • 軽金属溶接

    軽金属溶接 53 (11), 448-454, 2015

    一般社団法人 軽金属溶接協会

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