The effect of the heat treatment of the Al-Zn-Mg-Cu aluminum alloy on marine environment corrosion resistance
Keywords:
Hợp kim nhôm hệ Al-Zn-Mg-Cu, Hợp kim 7075, Hợp kim B95, Hóa già hợp kim nhômAbstract
In this paper, the effect of the different heat treatments on marine environment corrosion property of the high strength aluminum alloy Al-Zn-Mg-Cu (B95, Russia). The alloy was treated with different regimes such as: artificial aging (T6), two-step aging (T76), retrogresstion and re-aging (RRA), were for the corrosion resistance by the salt spray, in laboratory using 3.5 % NaCl solution and in real marine environment. The result showed that the alloy was treated with two-step aging T76 (the first aging 120 oC for 10 h, second aging 165 oC for 15 h) corrosion resistance than that of T6 and RRA. Keyworks: Al-Zn-Mg-Cu alloy; 7075 alloy; B95 alloy; Aluminum alloy Aging.
References
A. Azarniya, A. K. Taheri and K. K. Taheri, “Recent advances in ageing of 7xxx series aluminum alloys: A physical metallurgy perspective”, J Alloys Compd, Vol. 781 (2019), pp. 945 - 983.
X. Peng, Y. Li, G. Xu, J. Huang and Z. Yin, “Effect of Precipitate State on Mechanical Properties, Corrosion Behavior, and Microstructures of Al-Zn-Mg-Cu Alloy”, Met Mater Int, Vol. 24, (2018), pp. 1046 - 1057.
G. E. Totten, D. Scott MacKenzie, “Handbook of Aluminum: Volume 1 Physical Metallugy and Processes”, Marcel Dekker, Inc. 270 Madison Avenue, New York, NY 10016 (2003).
X. Chen, S. Zhai, D. Gao, Y. Liu, J. Xu and Y. Liu, “Enhanced stress corrosion cracking resistance and electrical conductivity of a T761 treated Al-Zn-Mg-Cu alloy thin plate”, Mater Res Express, Vol. 5 (2018), pp. 1 - 18.
TCVN 7699-2-52:2007 “Thử nghiệm môi trường - Phần 2-52: Các thử nghiệm - Thử nghiệm Kb: Sương muối, chu kỳ (dung dịch natri clorua)” (2007).
Trịnh Xuân Sén “Ăn mòn và Bảo vệ kim loại”, Nhà xuất bản Đại học Quốc gia Hà Nội, (2006), tr. 151.
