Effect of different aging conditions on the mechanical and corrosion properties of 7075 aluminum alloy

  • Ngô Minh Tiến Institute of Chemistry and Materials, Academy of Military Science and Technology
  • Nguyễn Văn Bằng Institute of Chemistry and Materials, Academy of Military Science and Technology
  • Nguyễn Tài Trượng Institute of Chemistry and Materials, Academy of Military Science and Technology
  • Nguyễn Thị Hoài Phương Institute of Chemistry and Materials, Academy of Military Science and Technology
  • Ninh Đức Hà Institute of Chemistry and Materials, Academy of Military Science and Technology
Keywords: 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.

điểm /   đánh giá
Published
2023-12-25
Issue
Vol. 92 (2023)
Section
Research Articles