VANADIUM-FREE ALUMINUM ALLOY SUITABLE FOR FORGED AND EXTRUDED AEROSPACE PRODUCTS

摘要

The invention discloses a kind of forgings or extrusion structure component suitable for aerospace applications and with improved intensity and toughness combination. The component is by substantially by about 4.85-5.3wt.The copper of %, about 0.5-1.0wt.The magnesium of %, about 0.4-0.8wt.The manganese of %, about 0.2-0.8wt.The silver of %, about 0.05-0.25wt.The acieral without vanadium substantially of composition is made. Zirconium content is 0.1wt% or so, silicone content 0.1wt% or so, iron content 0.1wt% or so, remaining aluminium, impurity and impurity content are 5-9 or so, more preferably 6.0-7.5 or so. The present invention shows about 77ksi or higher Typical tensile yield strength at room temperature, and can be forged into airplane wheel or be squeezed into various other product forms for use as high-speed aircraft Wing members, such as stringer etc..