Effect of Mechanical Activation Time on the Density of Fine-Grained Tungsten Alloy 90W–7Ni–3Fe, Obtained by Spark Plasma Sintering
V. N. Chuvil’deev,
A. V. Nokhrin,
M. S. Boldin
et al.
Abstract:Abstract—The influence of the high-energy mechanical activation (HMA) time on the kinetics of solid-phase Spark Plasma Sintering (SPS) and the microstructure of a heavy tungsten alloy 90W–7Ni–3Fe has been studied. The density of the alloy 90W–7Ni–3Fe nonmonotonically, with a minimum, depends on the time of the HMA. The kinetics of the SPS of nanopowders has a two-stage character; the sintering intensity depends on the rate of Coble creep and the intensity of diffusion of W atoms in the crystal lattice of the n… Show more
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