RT journal article
T1 Processing of WC with Fe-based alternative binders: Adjustment of C content and effect of Cr addition
A1 de Nicolás-Morillas, María
A1 Besharatloo, Hossein
A1 Cabeza, Laura
A1 Mata Fernández, María de la
A1 Sales Lérida, David
A1 Pereira, Leonel
A1 Müller-Grunz, Andrea
A1 Bertalan, Claudio
A1 Useldinger, Ralph
A1 Llanes, Luis
A1 Gordo, Elena
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Alternative hard materials
K1 corrosion resistance
K1 Massive nanoindentation
K1 Cr alloys
K1 Microstructure characterisation
AB Alternative hard materials to traditional WC-Co are one of the main goals in the investigation efforts of both scientific and industrial communities. In this investigation, WC-based materials were designed and processed with different Fe alloys employing a powder metallurgy route. Two candidates were selected: FeCrAl and FeNiCr. The former showed the formation of aluminium oxides, which hindered a homogeneous metal-ceramic distribution. On the other hand, FeNiCr led to dense and optimised samples which were further characterised in terms of their mechanical properties and corrosion resistance. They revealed an excellent combination of hardness and toughness, comparable or even superior to industrial compositions containing Co. Selected Cr addition induced some segregation and formation of secondary carbides –in consonance with thermodynamic simulation results and as evidenced by optical microscopy, XRD and TEM analyses– with a decrease in the TRS value. However, massive nanoindentation tests revealed that it also led to improved intrinsic hardness of binder and composite (metal-ceramic) phases, as well as enhanced corrosion resistance in acidic media compared to Cr-free alternative and reference hardmetals.
PB Elsevier
SN 0263-4368
YR 2024
FD 2024
LK http://hdl.handle.net/10498/37317
UL http://hdl.handle.net/10498/37317
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026