Aluminum products are the general name of daily necessities and industrial supplies processed with aluminum alloy as the main raw material. Aluminum alloy is the general name of aluminum based alloys. The main alloy elements are copper, silicon, magnesium, zinc and manganese, and the secondary alloy elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloys used in aircraft have high requirements for strength, hardness, toughness, fatigue resistance, and plasticity.In...