A Comparative Corrosion Study on Traditional and Melt-Spinning 7075 Al Alloy

  • Sieglind Ngai
  • Tungwai Ngai
  • Yongliang Ou
  • Weipeng Zhang
  • Liejun Li
Conference paper


Rapidly solidified 7075 Al alloy ribbons were prepared by melt-spinning. Sintered 7075 compacts with fine-grain microstructure were obtained by spark plasma sintering of the chopped melt-spun ribbons at different sintering temperatures. The corrosion behavior of the sintered 7075 alloy was examined and compared to that of the 7075-T6 bulk by electrochemical and immersion experiments carried out in NaCl solution. Microstructures of the consolidated samples before and after corrosion tests were examined by optical microscope and scanning electron microscope. Ratios of corrosion after immersion tests were measured by an image analyzing software. Results of this study suggest that the sintered material exhibited slightly poorer corrosion resistance than the bulk 7075 alloy and the porosity adversely affect the corrosion behaviors of the sintered material.


Fine-grain 7075 Al alloy Powder metallurgy Melt-spinning Corrosion behavior Electrochemical test 


  1. 1.
    E.J. Lavernia, J.D. Ayers, T. Srivatsan, Rapid solidification processing with specific application to aluminum alloys, Int. Mater. Rev. 37 (1992) 1–44.Google Scholar
  2. 2.
    C.L. Xu, H.Y. Wang, F. Qiu, Y.F. Yang, Q.C. Jiang, Cooling rate and microstructure of rapidly solidified Al-20wt.% Si alloy, Mater Sci. Eng. A 417 (2006) 275–280.Google Scholar
  3. 3.
    Y. Birol, Microstructural evolution during annealing of a rapidly solidified Al-12Si alloy, J. Alloys. Compd. 439 (2007) 81–86.Google Scholar
  4. 4.
    A.K. Srivastava, V.C. Srivastava, A. Gloter, S.N. Ojha, Microstructural features induced by spray processing and hot extrusion of an Al-18% Si-5% Fe-1.5% Cu alloy, Acta. Mater. 54 (2006) 1741–1748.Google Scholar
  5. 5.
    Y.E. Kalay, L.S. Chumbley, I.E. Anderson, R.E. Napolitano, Characterization of hypereutectic Al-Si powders solidified under far-from equilibrium conditions, Metall. Mater. Trans. A 38 (2007) 1452–1457.Google Scholar
  6. 6.
    T. Hu, K. Ma, T.D. Topping, J.M. Schoenung, E.J. Lavernia, Precipitation phenomena in an ultrafine-grained Al alloy, Acta Mater. 61 (2013) 2163–2178.Google Scholar
  7. 7.
    V.K. Champagne, The repair of magnesium rotorcraft components by cold spray, J. Fail. Anal. Prev. 8 (2008) 164–175.Google Scholar
  8. 8.
    K.K. Sankaran, R. Perez, K.V. Jata, Effects of pitting corrosion on the fatigue behavior of aluminum alloy 7075-T6: modeling and experimental studies, Mater. Sci. Eng. A 297 (2001) 223–229.Google Scholar
  9. 9.
    P.S. Pao, S.J. Gill, C.R. Feng, On fatigue crack initiation from corrosion pits in 7075-T7351 aluminum alloy, Scr. Mater. 43 (2000) 391–396.Google Scholar
  10. 10.
    M.R. Rokni, C.A. Widener, G.A. Crawford, Microstructural evolution of 7075 Al gas atomized powder and high-pressure cold sprayed deposition, Surf. Coatings Technol. 251 (2014) 254–263.Google Scholar
  11. 11.
    Y. Qu, R. Su, J. You, R. Li, Study on microstructure, mechanical properties and corrosion behavior of spray formed 7075 alloy, Mater. Today Com. 4 (2015) 109–115.Google Scholar
  12. 12.
    V.V. Rao, Centrifugal atomization and rapid-solidification processing of high-strength aluminium alloys, J. Mater. Sci. Let. 11 (1992) 135–137.Google Scholar
  13. 13.
    K. Spencer, M.X. Zhang, Optimization of stainless steel cold spray coatings using mixed particle size distributions, Surf. Coatings Technol. 205 (2011) 5135–5140.Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Sieglind Ngai
    • 1
  • Tungwai Ngai
    • 1
  • Yongliang Ou
    • 1
  • Weipeng Zhang
    • 1
  • Liejun Li
    • 1
  1. 1.National Engineering Research Center of Near-Net-Shape Forming Technology for Metallic MaterialsSouth China University of TechnologyGuangzhouPeople’s Republic of China

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