Study on the wear characteristics of INCO939 alloy manufactured by laser powder bed fusion and casting.
Tribology International, vol.194, 2024 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 194
- Publication Date: 2024
- Doi Number: 10.1016/j.triboint.2024.109555
- Journal Name: Tribology International
- Journal Indexes: 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
- Keywords: Inconel 939, Laser-powder bed fusion, Microstructure, 3D wear surface, Wear behavior
- Hacettepe University Affiliated: Yes
Abstract
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.