Influence of retrogression and re-ageing on the mechanical and corrosion properties of 7039 aluminium alloy

The effect of T6 and retrogression and re-ageing (RRA) treatments on the corrosion and mechanical properties of a 7039 Al alloy was examined. T6- and RRA-tempered alloys exhibited a similar intergranular corrosion resistance for a retrogression time of 3 min at 220 °C. The results revealed that an R...

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Bibliographic Details
Published inInternational journal of materials research Vol. 95; no. 1; pp. 14 - 17
Main Authors Sağlam, Uğras, Baydoğan, Murat, Mindivan, Harun, Sabri Kayali, E., Çimenoğlu, Hüseyin
Format Journal Article
LanguageEnglish
Published De Gruyter 20.12.2021
Subjects
Aluminium alloy 7039
Corrosion
Re-ageing
Retrogression
Stress corrosion
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Summary:The effect of T6 and retrogression and re-ageing (RRA) treatments on the corrosion and mechanical properties of a 7039 Al alloy was examined. T6- and RRA-tempered alloys exhibited a similar intergranular corrosion resistance for a retrogression time of 3 min at 220 °C. The results revealed that an RRA-tempered alloy (3 min retrogression at 220 °C followed by re-ageing) exhibited a higher hardness and strength and a lower ductility and toughness than a T6-tempered alloy with a significant improvement in the stress corrosion cracking resistance.
ISSN:1862-5282
2195-8556
DOI:10.3139/ijmr-2004-0004