Microstructural Characterization and Enhancement of the Wear Behavior of 316L+WC Metal Matrix Composite Processed by Directed Energy Deposition
摘要
The present contribution considers a metal matrix composite (MMC) made of a mixture of 316L stainless steel with WC reinforcements, which has been processed under Directed energy deposition (DED). The aim is to understand the effect of WC reinforcements on an austenitic microstructure obtained by DED, to being applied to a much harder matrix in future works. Relevant results obtained on the fabricated MMC are discussed restoring both the solidification and the subsequent solid-state transformations that took place during DED process. Moreover, interrupted wear tests carried out on the MMC help us to understand the complex and sequential wear behavior of the cladded material while enhancing the wear mechanisms that occur under dry sliding conditions.