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Physics of Metals and Metallography

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01.10.2023 | STRUCTURE, PHASE TRANSFORMATIONS, AND DIFFUSION

Effect of the Mechanical Activation Time on the Density of Fine-Grained 90W–7Ni–3Fe Alloy Synthesized by Spark Plasma Sintering

verfasst von: V. N. Chuvil’deev, A. V. Nokhrin, M. S. Boldin, E. A. Lantsev, N. V. Sakharov

Erschienen in: Physics of Metals and Metallography | Ausgabe 10/2023

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Abstract

The effect of the high-energy mechanical activation (HMA) time on the microstructure of heavy tungsten 90% W–7% Ni–3% Fe alloy (VNZh-90) and its solid-phase sintering kinetics was studied. Alloy specimens were manufactured by vacuum spark plasma sintering (SPS). It has been shown that the density of alloy VNZh-90 depends on the HMA time nonmonotonically with a minimum. It has been demonstrated that the kinetics of the SPS of mechanically activated nanopowders has a two-stage character; the sintering rate depends on the Coble creep rate and the diffusion rate of W atoms in the crystal lattice of the nickel based γ-phase.

Vorheriger Artikel Study of the Al–Sc Solid Solution Decomposition during Annealing of Strained Al–0.5% Mg–Sc Alloys

Nächster Artikel Nanosize Dependence of the Mutual Solubility in the Solid State in a Mo–Ru Metal System

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Titel: Effect of the Mechanical Activation Time on the Density of Fine-Grained 90W–7Ni–3Fe Alloy Synthesized by Spark Plasma Sintering
verfasst von: V. N. Chuvil’deev
A. V. Nokhrin
M. S. Boldin
E. A. Lantsev
N. V. Sakharov
Publikationsdatum: 01.10.2023
Verlag: Pleiades Publishing
Erschienen in: Physics of Metals and Metallography / Ausgabe 10/2023
Print ISSN: 0031-918X
Elektronische ISSN: 1555-6190
DOI: https://doi.org/10.1134/S0031918X23601749

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