Microstructural Anisotropy, Mechanical Properties, and Fatigue Crack Growth Behavior of AA2050-T84 Alloy

Tufan B. A., Kibar A. A., GÜRBÜZ R.

Fatigue and Fracture of Engineering Materials and Structures, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1111/ffe.14482
  • Dergi Adı: Fatigue and Fracture of Engineering Materials and Structures
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), Communication Abstracts, Compendex, INSPEC, Metadex, DIALNET, Civil Engineering Abstracts
  • Anahtar Kelimeler: AA2050-T84, crack deviation, fatigue crack growth, fracture, microstructure
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

This study focuses on characterizing the microstructure and mechanical properties of AA2050-T84 alloy produced in two different thicknesses, 20 and 130 mm. A comparative analysis between the two thicknesses aims to understand how the rolling operation for achieving thin plates influences the alloy's microstructure and overall mechanical performance. Microstructural analyses showed a highly anisotropic grain structure and preferred crystallographic orientation in the 20-mm-thick plate, causing anisotropic tensile properties. Also, a significant fatigue crack deviation was observed for the 20-mm-thick plate during fatigue crack growth tests due to its microstructure. This result was attributed to the microcrack formations perpendicular to the crack growth direction and slip bands at the intermediate ΔK, when the loading was parallel to the rolling direction. The findings from this study offer critical insights into how the rolling operation for achieving thin plates influences the microstructure and overall performance of the alloy.