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Development of Reliable Accelerated Corrosion Tests for Aluminum Alloys Used in the Aerospace Industry
RISE Research Institutes of Sweden, Materials and Production, Corrosion.ORCID iD: 0000-0001-6175-5579
RISE Research Institutes of Sweden, Materials and Production, Corrosion.ORCID iD: 0000-0001-5462-2700
2023 (English)In: Corrosion, ISSN 0010-9312, E-ISSN 1938-159X, Vol. 79, no 9, p. 1006-1016Article in journal (Refereed) Published
Abstract [en]

Aluminum alloys are not immune to corrosion which can take the form of localized corrosion. Thus, the assessment of the corrosion behavior of aluminum alloys under atmospheric conditions is a major topic for the aerospace industry. One major difficulty in this task is the lack of robust and reliable accelerated corrosion test(s) in this field. Indeed, several tests as the neutral salt spray test (ASTM B117) are used to assess the general corrosion resistance of aluminum, but these tests were not developed specifically for the aerospace industry and are not representative of service conditions. The aim of the present study was to compare the results of various accelerated corrosion test conditions (ASTM B117, VDA 233-102, Volvo STD 423-0014) with newly developed test conditions. Hence, different accelerated corrosion tests were designed by varying several parameters in the Volvo STD 423-0014 such as the salt concentration, time of wetness, and relative humidity. The results obtained on eight aluminum alloys (2xxx, 7xxx, and Al-Li alloys) were then compared to marine exposures. From the results, one test provides the same type of corrosion attacks on the different alloys under atmospheric exposures in the marine site and a good acceleration factor.

Place, publisher, year, edition, pages
Association for Materials Protection and Performance , 2023. Vol. 79, no 9, p. 1006-1016
Keywords [en]
Aerospace industry; Aluminum corrosion; Atmospheric corrosion; Atmospheric humidity; Binary alloys; Corrosion resistance; Corrosion resistant alloys; Corrosive effects; Lithium alloys; Localized corrosion; Seawater corrosion; Accelerated corrosion testing; Accelerated corrosion tests; Aerospace corrosion; Atmospheric conditions; Atmospheric exposures; Corrosion behaviour; Localized corrosion; Neutral salt spray test; Test condition; Test development; Aluminum alloys
National Category
Corrosion Engineering Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:ri:diva-67720DOI: 10.5006/4356Scopus ID: 2-s2.0-85173631246OAI: oai:DiVA.org:ri-67720DiVA, id: diva2:1809698
Note

The authors acknowledge the industrial partners of the Member Research Consortium (MRC) “Aerospace” from the ARCOR association for funding, material supply, and fruitful discussions on the experimental protocol and results: Boeing, Airbus Commercial, Airbus Defense and Space, Airbus Helicopters, Constellium, DGA, Socomore, AkzoNobel, Henkel, Liebherr, PPG Aerospace, UACJ Corporation, and Safran Tech.

Available from: 2023-11-06 Created: 2023-11-06 Last updated: 2023-11-16Bibliographically approved

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Peltier, FabienneThierry, Dominique

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