Effect of different aging conditions on the mechanical and corrosion properties of 7075 aluminum alloy
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https://doi.org/10.54939/1859-1043.j.mst.92.2023.86-91Keywords:
7075 alloy; B95 alloy; Aging; Mechanical properties; Sea corrosion.Abstract
In this paper, the effects of some aging treatments on the characteristic properties of the high strength-deformation 7075 aluminum alloy plate are studied. Some heat treatments such as natural aging, traditional aging T6, over-aging T76, re-aging RRA and interrupted aging T6I6 are studied. The 7075 alloy system, after aging, is evaluated for characteristic properties: mechanical properties, salt spray corrosion, and electrochemical corrosion. The high strength-deformation 7075 aluminum alloy plate, after different aging, has various mechanical and chemical properties depending on usage requirements, select process concordant: T6I6 can increase the ultimate strength, tensile strength up to 630 MPa, hardness 91 HRB; T76 can increase ability corrosion resistance optimal in seawater environment; RRA ensure simultaneously mechanical properties and ability corrosion resistance good.
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