Quality Diagnostics of Parts Produced by Combined Additive Manufacturing Technology

The work is focused on the combined process of obtaining bimetallic parts that involve laser-directed energy deposition (LDED) additive technology and conventional casting process. In this research, molybdenum powder was deposited by LDED a cast 25L steel substrate. choice materials motivated demands for replacing traditional technique brazing with copper interlayer low-carbon to eliminate shortcomings. influence particle morphology quality layers studied. Spherical PMS-M99.9 facilitated stable good found be suitable LDED. Quality diagnostics were performed studying microstructure, hardness, wear resistance properties. Preferential parameters through parametrical analysis. Microstructural studies showed results in homogeneous layer strong bond substrate, which confirmed mutual diffusion Mo Fe boundary. It also demonstrated working assure high wear, fretting resistance. three studied coatings (LDED powders PM-M; VM1 brazing) had same friction coefficient value ~0.25. Compared others, coating lowest volumetric while abrasive measured highest.