Corrosion Science and Technology

  • 제15권4호
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  • Pages.159-165
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  • 2016
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  • 1598-6462(pISSN)
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  • 2288-6524(eISSN)
한국부식방식학회 (The Corrosion Science Society of Korea)
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Influence of Retrogression and Re-aging on the Exfoliation Corrosion Behavior of AA 7085 Sheets

  • Krishnan, Ajay (Department of Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay) ;
  • Raja, V.S. (Department of Metallurgical Engineering & Materials Science, Indian Institute of Technology Bombay) ;
  • Mukhopadhyay, A.K. (Defence Metallurgical Research Laboratory)
  • 투고 : 2016.01.28
  • 심사 : 2016.07.05
  • 발행 : 2016.08.31
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초록

An attempt has been made to understand the influence of retrogression and re-aging (RRA) on the exfoliation corrosion behaviour of AA 7085 alloy in comparison with the peak aged condition (PA). Immersion tests using ASTM G34 and studies involving electrochemical impedance spectroscopy showed that the RRA treated alloy provided higher resistance to exfoliation corrosion than the PA treated alloy. The improved resistance was attributed to the enhanced Cu content and the discontinuous nature of the grain boundary precipitate, which was revealed through transmission electron microscopy.

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피인용 문헌

  1. Influence of various heat treatment procedures on the corrosion behavior of Al-Zn-Mg-Cu alloys vol.6, pp.12, 2016, https://doi.org/10.1088/2053-1591/ab5458
  2. Effects of retrogression and re-aging treatment on precipitation behavior, mechanical and corrosion properties of a Zr+Er modified Al-Zn-Mg-Cu alloy vol.183, pp.None, 2016, https://doi.org/10.1016/j.matchar.2021.111617