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Laser cladding with a heterogeneous powder mixture of WC/Co and NiCrBSi

 
: Dausinger, F.; Grünenwald, B.; Nowotny, S.; Shen, J.

Mordike, B.L. ; Wissenschaftlicher Arbeitskreis Laser-Technik; Deutsche Gesellschaft für Materialkunde e.V. -DGM-, Oberursel; Deutscher Verband für Schweißtechnik e.V. -DVS-, Düsseldorf; Arbeitsgemeinschaft Wärmebehandlung und Werkstofftechnik e.V. -AWT-:
Laser treatment of materials. Papers presented at the European Conference on Laser Treatment of Materials 1992
Oberursel: DGM-Informationsgesellschaft, 1992
ISBN: 3-88355-185-6
pp.411-416 : Abb.,Tab.,Lit.
European Conference on Laser Treatment of Materials (ECLAT) <4, 1992, Göttingen>
English
Conference Paper
Fraunhofer IWS ()
alloying; Beschichtung; cladding; Dispergieren; laser; Legieren; particle injection; Verschleißschutz; wear protection

Abstract
Many applications in machine building require surface layers whose wear properties are comparable with those of sintered hard metal. One way to solve this problem is the laser cladding with a composite powder mixture consisting of carbide particles and a ductile metal alloy as binder. In the present work a powder mixture of 60 wt% WC/Co and 40 wt% NiCrBSi is cladded onto a low carbon steel. A detailed parameter optimization is described to get a reproducible composite coating free of cracks and with low iron dissolution. Layer properties as track shape, microstructure and hardness are characterised.

: http://publica.fraunhofer.de/documents/PX-21514.html