7xxx系鋁合金焊接研究現狀與展望

7xxx系鋁合金焊接研究現狀與展望Research status and perspective of 7xxx series aluminum alloys welding

結合7xxx系鋁合金的焊接特點，介紹7xxx系鋁合金焊接焊絲的選擇與優化，闡述雙絲-MIG焊、激光-MIG復合焊、攪拌摩擦焊3種焊接新方法，與傳統焊接方法相比，它們在7xxx系鋁合金焊接上頗具優勢和發展前景。通過合金化進行7xxx系鋁合金母材和焊絲的優化設計、開發新的焊接方法是未來鋁合金焊接領域的重要研究方向。

The characteristics of welding for 7xxx series aluminum alloys were combined, and the selection and optimization of wires were introduced. Three new welding methods, such as double wire MIG welding, laser-MIG hybrid welding and friction stir welding, were stated. Compared with traditional welding methods, the three new methods have superiority and foreground in the welding of 7xxx series aluminum alloys. Alloying optimization design of base metal and wire for 7xxx series aluminum alloys, developing of new welding method are the important research direction in the future.

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