Aluminum-based alloys in general. The main alloying elements are copper, silicon, magnesium, zinc, manganese, minor alloying elements are nickel, iron, titanium, chromium, lithium and so on.
Aluminum density is low, but the intensity is relatively high, close to or exceed the high quality steel, plastic, can be processed into a variety of profiles, with excellent electrical conductivity, thermal conductivity and corrosion resistance, widely used in industry, usage after the steel .
Aluminum alloy processing methods can be divided into deformation aluminum and cast aluminum two categories:
Wrought aluminum alloy can withstand pressure processing. Processed into various forms, specifications of aluminum material. Mainly used in the manufacture of aviation equipment, building doors and windows. Deformation is divided into non-heat-strengthened aluminum alloy and heat-strengthened alloys. Enhanced heat treatment can not by heat treatment to improve the mechanical properties, can only be achieved by cold deformation strengthening, which includes high purity aluminum, industrial high-purity aluminum, industrial aluminum and rust-proof aluminum. Heat treatable aluminum alloys can improve the mechanical properties by quenching and aging heat treatment, it can be divided into hard aluminum, wrought aluminum, super-hard aluminum and special alloy and so on.
Cast aluminum can be divided according to the chemical composition of Al-Si alloy, aluminum-copper alloys, aluminum-magnesium alloy, aluminum-zinc alloy and aluminum rare earth alloys, which have hypereutectic Al-Si alloy aluminum silicon eutectic silicon alloy, single co crystalline silicon alloy, cast aluminum alloy cast under use. Some of the aluminum alloy can be heat treated to obtain good mechanical properties, physical properties and corrosion resistance.