Optimization of Direct Laser Deposition of a Martensitic Steel Powder (Metco 42C) on 42CrMo4 Steel

In this study, the deposition of martensitic stainless-steel (Metco 42C) powder on 42CrMo4 structural steel by direct laser (DLD) was investigated. Clads were produced varying power, scanning speed, feed rate, and preheating. The effect these processing variables microstructure microhardness clads analyzed, as well their soundness, yield (measured dilution), geometric characteristics (height, width, depth). complex interaction evaluated forced application parameters to systematize clads. A genetic optimization algorithm performed determine conditions warranting high-quality clads, that is, sound metallurgically bonded substrate with required yield.