Resistance against Abrasive Wear and Corrosion of Laser Powder Bed Alloyed High Chromium Tool Steels

Additive manufacturing by laser-based powder bed fusion of metals (PBF-LB/M) enables the production complex shaped components. High-carbon tool steels tend to cracking during PBF-LB/M due internal stresses caused rapid solidification. Expensive atomization and long lead times for generate high costs in this processing route. In situ alloying blends from conventionally available powders a more flexible approach alloy design. For industrial use, mechanical properties alloyed parts must be comparable those manufactured parts. some cutting forming applications, wear resistance corrosion are required simultaneously. High cold work with sufficient chromium solved metal matrix fulfill these demands. Herein, AISI H13 is modified Cr3C2 elemental Cr suit requirements. Two novel alloys modeled thermodynamically processed PBF-LB/M. In-depth microstructural investigations backscatter electron imaging diffraction combination abrasive tests potentiodynamic polarization curves allow microstructure property correlations different heat-treated conditions. Partial crack-free processing, hardenability, formation Cr-rich carbides, residual inclusions observed their influence on discussed.