Article 2024 · 3 citations

Exfoliation behavior of EN AW 7020 with T6, step aging and ultrasonic impact peening processes

Yurdgulu, Halil Ibrahim, Sadeler, Recep, Koc, Baris

Abstract

In this study the effect of T6 heat treatment, two-step aging treatment and ultrasonic impact peening on the exfoliation corrosion behavior of welded EN AW 7020 was investigated. Exfoliation tests were performed according to the ASTM G34-01 standard. As expected, as a result of the tests, the base material region of all three samples were showed better corrosion resistance than the heat-affected region. Ultrasonic impact peening and two-step aging treatment was observed that improved EXCO sensitivity in the weld area. When sorting was made by considering the resistance to corrosion of the heat affected zone of the samples, it was observed that the best resistance was shown by the sample with two-step aging treatment, and the worst resistance was shown by the sample with T6 heat treatment.

Keywords

EN AW 7020 weldment T6 heat treatment two-step aging ultrasonic impact peening exfoliation corrosion STRESS-CORROSION CRACKING MECHANICAL-PROPERTIES ALUMINUM-ALLOYS HEAT-TREATMENT MICROSTRUCTURE SC

WoS Categories

Materials Science, Characterization & Testing

Sustainable Development Goals

Responsible Consumption and Production

Citation

Journal: MATERIALS TESTING
Year: 2024
Volume: 66
Issue: 5
Pages: 687-695
ISSN: 0025-5300
eISSN: 2195-8572
DOI: 10.1515/mt-2023-0373
WoS UID: WOS:001185833100001

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