Progress in Additive Manufacturing
Effect of aging temperature on the microstructure and tribological behavior of an 18Ni maraging steel manufactured by laser powder bed fusion (LPBF)
Abstract This study addresses the critical knowledge gap regarding the influence of kinetically controlled austenite reversion on the tribological stability of Laser Powder Bed Fusion (LPBF) 18Ni-300 maraging steel. While conventional aging focuses on peak hardness (450–550 °C), this research investigates the high-temperature aging regime (610 °C and 650 °C) to elucidate the correlation between phase meta-stability and the evolution of protective tribo-layers. Samples were characterized using LOM, SEM, and XRD, wit …