A closer look at constituent induced localised corrosion in Al-Cu-Mg alloys

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A closer look at constituent induced localised corrosion in Al-Cu-Mg alloys

Journal Article (2016)

Author(s)

N. Birbilis (Monash University)

Y.M. Zhu (Monash University)

S.K. Kairy (Monash University)

MA Glenn (CSIRO - Mineral Resources, Kensington)

J.F. Nie (Monash University)

A.J. Morton (CSIRO - Mineral Resources, Kensington, Monash University)

Yaiza Gonzalez Garcia (TU Delft - (OLD) MSE-6)

Herman Terryn (Vrije Universiteit Brussel)

Arjan Mol (TU Delft - (OLD) MSE-6)

A.E. Hughes (Monash University, CSIRO - Mineral Resources, Kensington)

Research Group

(OLD) MSE-6

AA2024 A: aluminium A: intermetallics B: TEM B: STEM C: pitting corrosion

DOI related publication

https://doi.org/10.1016/j.corsci.2016.10.018 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:f7eb118d-8378-4e58-aa04-d2349f30c77f

More Info

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Publication Year

2016

Language

English

Research Group

(OLD) MSE-6

Volume number

113

Pages (from-to)

160-171

Downloads counter

165

Abstract

The role of constituent intermetallic particles in the pitting corrosion of aluminium (Al) alloys is well recognised. A definitive quantification of the role of unique constituent particles has contributed towards an enhanced understanding of Al-alloy corrosion, however the complexity of Al-alloy microstructures warrants further attention. In the present work we identify a unique intermetallic type in contemporary versions of AA2024-T3, which has a two-phase structure, defined by two distinct crystal types, and distinct compositions. Detailed characterisation is used to unambiguously define this constituent, along with its role in localised corrosion.