|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Advances in Surface Engineering IV
||Effect of Test Temperature on Tribological Behavior of Laser Cladded Stellite 21 Coating on 350 Maraging Steel
||Sougata Roy, Niyanth Sridharan, Ercan Cakmak, Hamed Ghaednia, Arup Gangopadhyay, Jun Qu
|On-Site Speaker (Planned)
Current study was directed to characterize a Co-based Stellite 21 coating fabricated by laser cladding and study its tribological behavior at different temperatures, i.e., 25, 150, and 300o C. Detailed microstructure study on the 3D printed samples was conducted using XRD, SEM and EDS techniques. Friction and wear results of Stellite coated surfaces were compared against the substrate material 350 maraging steel. The Stellite coating showed significantly lowered friction than the maraging steel at all test temperatures. While the Stellite’s wear loss was higher than the steel in general, it retained wear resistance better at elevated temperatures. At a higher temperature, more material transfer from the coated surface to the counterface was observed. XRD based observation revealed FCC to HCP phase transformation due to heat treatment and during reciprocating wear tests which can be considered as the key factor in retaining the wear resistance at elevated temperatures.
||Surface Modification and Coatings, Copper / Nickel / Cobalt, Phase Transformations