Laser-DED of WC-stainless steel metal matrix composites: Functionally Graded Deposition and Tribological Performance

Authors:

A. Luaces (1), A. Aourdou (1), G. García (1), J.M. Amado (1), M.J. Tobar (1), A.Yáñez (1)

1- Campus Industrial. CITENI. Universidade da Coruña, Ferrol, Spain.

Abstract:

This study investigates the laser directed energy deposition (DED) of WC-steel metal matrix composites to create functionally graded coatings with varying carbide content. Using a Nd-YAG laser and a powder distribution system, coatings were deposited with controlled gradients of WC within the AISI316L stainless steel matrix. Microstructural analysis revealed uniform carbide distribution and effective bonding with the metallic matrix. Hardness measurements demonstrated a significant increase in matrix hardness with increasing WC content, confirming successful carbide incorporation. Tribological tests indicated varying wear resistance capabilities across different zones of the coatings, correlating with the carbide gradient.

DOI:

https://doi.org/10.59499/EP246283184