Aluminum alloy is the most widely used non-ferrous metal structural material in industry. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry.
With the rapid development of industrial economy, the demand for aluminum alloy welded structural parts is increasing, which makes the research on the weldability of aluminum alloy go deep. Aluminum alloys can be divided into deformation aluminum alloys and casting aluminum alloys according to processing methods
Deformed aluminum alloy can withstand pressure processing. It can be processed into aluminum alloy materials of various shapes and specifications. It is mainly used for manufacturing aviation equipment, building doors and windows, etc. Wrought aluminum alloys are divided into non heat treatable strengthened aluminum alloys and heat treatable strengthened aluminum alloys.
Non heat treatable reinforced type can not improve mechanical properties through heat treatment, but can only be strengthened through cold working deformation. It mainly includes high-purity aluminum, industrial high-purity aluminum, industrial pure aluminum and antirust aluminum
Heat treatable strengthened aluminum alloy can improve its mechanical properties by heat treatment means such as quenching and aging. It can be divided into hard aluminum, forged aluminum, superhard aluminum and special aluminum alloy.
Cast aluminum alloy can be divided into aluminum silicon alloy, aluminum copper alloy, aluminum magnesium alloy, aluminum zinc alloy and aluminum rare earth alloy according to chemical composition.