A survey of sensitization in 5xxx series aluminum alloys

Ruifeng Zhang, Steven Peter Knight, Ronald L Holtz, Ramasis Goswami, Chris Huw John Davies, Nick Birbilis

Research output: Contribution to journalArticleResearchpeer-review

37 Citations (Scopus)

Abstract

The 5xxx series (Al-Mg-based) aluminum alloys suffer from intergranular corrosion and intergranular stress corrosion cracking when the alloy has become “sensitized.” Sensitization refers to insidious precipitation of β phase (Mg2Al3), which is problematic when present at grain boundaries. The β phase is electrochemically active and may preferentially dissolve. This paper reviews the relevant works that have documented the degree of sensitization for various 5xxx series alloys, providing a holistic overview of the issue, along with attention to the bulk composition, heat treatment, and microstructure.
Original languageEnglish
Pages (from-to)144 - 159
Number of pages16
JournalCorrosion
Volume72
Issue number2
DOIs
Publication statusPublished - Feb 2016

Keywords

  • 5xxx series
  • Aluminum alloys
  • Intergranular corrosion
  • Sensitization

Cite this

Zhang, R., Knight, S. P., Holtz, R. L., Goswami, R., Davies, C. H. J., & Birbilis, N. (2016). A survey of sensitization in 5xxx series aluminum alloys. Corrosion, 72(2), 144 - 159. https://doi.org/10.5006/1787
Zhang, Ruifeng ; Knight, Steven Peter ; Holtz, Ronald L ; Goswami, Ramasis ; Davies, Chris Huw John ; Birbilis, Nick. / A survey of sensitization in 5xxx series aluminum alloys. In: Corrosion. 2016 ; Vol. 72, No. 2. pp. 144 - 159.
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Zhang, R, Knight, SP, Holtz, RL, Goswami, R, Davies, CHJ & Birbilis, N 2016, 'A survey of sensitization in 5xxx series aluminum alloys', Corrosion, vol. 72, no. 2, pp. 144 - 159. https://doi.org/10.5006/1787

A survey of sensitization in 5xxx series aluminum alloys. / Zhang, Ruifeng; Knight, Steven Peter; Holtz, Ronald L; Goswami, Ramasis; Davies, Chris Huw John; Birbilis, Nick.

In: Corrosion, Vol. 72, No. 2, 02.2016, p. 144 - 159.

Research output: Contribution to journalArticleResearchpeer-review

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Zhang R, Knight SP, Holtz RL, Goswami R, Davies CHJ, Birbilis N. A survey of sensitization in 5xxx series aluminum alloys. Corrosion. 2016 Feb;72(2):144 - 159. https://doi.org/10.5006/1787