Article 2024 · 0 citations

Effects of ultrasonic peening on corrosion fatigue and corrosion behavior of welded AA5086-H32 aluminum alloy

Sadeler, Recep, Erge, Hakan, Atasoy, Selcuk

Abstract

Ultrasonic peening (UP) is a method that has been increasingly used in recent years to improve the fatigue strength of welded joints and structures. This study investigated the fatigue strength of butt-welded AA5086-H32 aluminum alloy plate specimens and the effects of ultrasonic peening under atmospheric and corrosive conditions. Exfoliation, intergranular, and electrochemical corrosion tests were also conducted further to analyze the effects of ultrasonic peening on corrosion behavior. Results demonstrated that the peening treatment enhanced the fatigue strength in air and corrosion conditions. The improvement can be attributed to surface layer hardening and applying compressive residual stresses to reduce stress concentration. Peening treatment also reduces corrosion sensitivity through surface hardening.

Keywords

ultrasonic peening (UP) corrosion fatigue strength AA5086-H32 aluminum alloy butt weldment intergranular corrosion electrochemical corrosion MECHANICAL-PROPERTIES RESIDUAL-STRESSES JOINTS ENHANCEMENT PERFORMANCE

WoS Categories

Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

Citation

Journal: KOVOVE MATERIALY-METALLIC MATERIALS
Year: 2024
Volume: 62
Issue: 6
Pages: 377-387
ISSN: 0023-432X
eISSN: 1338-4252
DOI: 10.31577/km.2024.6.377
WoS UID: WOS:001377215500005

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