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Spark plasma sintering was used to process Ni–W alloys from blends of Ni and W powders. The W amount ranged from 10 to 65 wt.%. XRD and EBSD investigations revealed the formation of Ni(W) solid solution along with clusters of pure W and remote quantities of WC or Ni₆W₆C carbide phases, depending on the initial W amount. The mechanical properties were investigated by tensile and hardness tests and compared to bulk Ni counterpart. Increasing the amount of W resulted in a grain size decrease of the Ni(W) component, probably due to grain boundary pinning by W solute atoms. This was also accompanied by an increase of both hardness and strength but at the expense of plastic strain. SEM investigations of the composite-like microstructures showed brittle fracture of the W clusters, whereas the Ni(W) solid solution counterpart exhibited a ductile behavior. Amongst the processed materials, the alloy …