Study on the wear characteristics of INCO939 alloy manufactured by laser powder bed fusion and casting.

KARABULUT Ş., KARAKOÇ H., BİLGİN M., Subaşı L., Dursun G., Ozaner O. C.

Tribology International, cilt.194, 2024 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 194
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1016/j.triboint.2024.109555
  • Dergi Adı: Tribology International
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Inconel 939, Laser-powder bed fusion, Microstructure, 3D wear surface, Wear behavior
  • Hacettepe Üniversitesi Adresli: Evet

Özet

This study examines the wear characteristics of INCO939 specimens spanning temperatures from 24 °C to 600 °C. Hardness measurements revealed higher values for laser powder bed fusion (LPBF) fabricated and heat-treated samples compared to cast ones. Friction tests indicated increasing coefficient of friction (COF) values for cast samples at high temperatures, while LPBF-fabricated and heat-treated samples exhibited gradual decreases. SEM and EDS mapping analyses highlighted oxidation as a protective mechanism against wear at elevated temperatures. Surface roughness worsened with temperature for cast samples but remained superior for LPBF-fabricated ones. Heat-treated specimens showed improved surface roughness at lower temperatures, decreasing from 30 µm at room temperature to smoother surfaces at 500 °C, but increased to 44 µm at 600 °C.