About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Tribology: Advances in Friction, Wear and Lubrication of Interfaces
|
| Presentation Title |
Influence of Interlayer Dwell Time on Reciprocating Wear Behavior of WAAM-Fabricated Inconel 625 |
| Author(s) |
Rajnish Mishra, Murshid Imam, Nimai Haldar, Yeni Usha |
| On-Site Speaker (Planned) |
Rajnish Mishra |
| Abstract Scope |
Inconel 625 walls were fabricated using Wire Arc Additive Manufacturing (WAAM) with interlayer dwell times of 10 s, 60 s, and 90 s to investigate the influence of thermal accumulation on wear behavior. Ball-on-disc reciprocating wear tests were performed under dry sliding at normal loads of 15 N, 25 N, and 35 N. The coefficient of friction (COF) ranged from 0.55 to 0.72, with lower dwell time samples showing reduced COF and wear loss due to refined microstructures and higher hardness. At 90 s dwell and 35 N load, the highest wear loss (~2.8 mg) and adhesive wear were observed. In contrast, 10 s dwell samples exhibited minimal wear (~1.2 mg) with dominant abrasive mechanisms. SEM and EDS analyses revealed oxide formation and material transfer on worn surfaces. The study demonstrates the role of dwell time in controlling microstructure and enhancing tribological performance in WAAM-fabricated Inconel 625 components. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |