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

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Sadeler R., Erge H., Atasoy S.

Kovove Materialy, cilt.62, sa.6, ss.377-387, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 62 Sayı: 6
  • Basım Tarihi: 2024
  • Doi Numarası: 10.31577/km.2024.6.377
  • Dergi Adı: Kovove Materialy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Central & Eastern European Academic Source (CEEAS), Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.377-387
  • Anahtar Kelimeler: AA5086-H32 aluminum alloy, butt weldment, corrosion fatigue strength, electrochemical corrosion, intergranular corrosion, ultrasonic peening (UP)
  • Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
  • Atatürk Üniversitesi Adresli: Evet

Özet

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.