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

被引：0

作者：

Chuvil'deev, V. N. ^{[1
]}

Nokhrin, A. V. ^{[1
]}

Boldin, M. S. ^{[1
]}

Lantsev, E. A. ^{[1
]}

Sakharov, N. V. ^{[1
]}

机构：

[1] Lobachevsky State Univ Nizhny Novgorod, Nizhnii Novgorod 603022, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2023年 / 124卷 / 10期

关键词：

tungsten alloy; mechanical activation; sintering; diffusion; density; DENSIFICATION BEHAVIOR; HEAVY ALLOYS; TUNGSTEN;

D O I：

10.1134/S0031918X23601749

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

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 gamma-phase.

引用

页码：987 / 994

页数：8