铝合金不但具有高的比强度、比模量、断裂韧度、疲劳强度和耐腐蚀稳定性,同时还具有良好的成形工艺性和良好的焊接性,因此成为应用最广泛的一类有色金属结构材料。现主要介绍了铝合金焊接的几种先进工艺:搅拌摩擦焊、激光焊、激光-电弧复合焊、电子束焊。针对于焊接性不好和曾认为不可焊接的合金提出了有效的解决方法,几种工艺均具有优越性,并可对厚板铝合金进行焊接。 Aluminum alloy not only has high specific strength, specific modulus, fracture toughness, fatigue strength and corrosion resistance stability, but also has good formability and good weldability, it has become the most widely used class of non-ferrous metal structures material. Now mainly introduced several advanced aluminum alloy welding process: friction stir welding, laser welding, laser - arc hybrid welding, electron beam welding. An effective solution is proposed for alloys that are poorly solderable and previously considered not solderable, several of which have advantages and are capable of welding thick-gauge aluminum alloys.