Destruction Features of Impactors Made of a Porous Alloy Based on Tungsten with Reinforcing Filler When Interacting with Armored Obstacles

Ищенко, А. Н.; Afanas’eva, S. A.; Белов, Н. Н.; Буркин, В. В.; Galsanov, S. V.; Kasimov, V. Z.; Kudryavtsev, V. A.; Lipatnikova, Ya. D.; Martsunova, L. S.; Rogaev, K. S.; Sammel, A. Yu.; Skosyrskii, A. B.; Yugov, N. T.

doi:10.1134/s106378422003010x

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…Heavy tungsten alloys (HTAs) of the W-Ni-Fe system with W content over 85-90% have a number of unique characteristics: simultaneous increased density, strength, and plasticity at room temperature [1][2][3][4][5], high characteristics of dynamic strength [6,7], high radiation resistance, etc. Industrial tungsten alloys with 90-95% W obtained using conventional liquid-phase sintering (LPS) have a density of 17-19 g/cm 3 , an ultimate strength of up to 1000 MPa, and elongation to failure of up to 25-30% at room temperature [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of High-Energy Ball Milling Time on the Density and Mechanical Properties of W-7%Ni-3%Fe Alloy

Нохрин

Малехонова

Чувильдеев

et al. 2023

Metals

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The present work was aimed at the investigation of the effect of high-energy ball milling (HEBM) time on the sintering kinetics, structure, and properties of the heavy tungsten alloy (HTA) W-7%Ni-3%Fe. The HTA samples were obtained from nanopowders (20–80 nm) using conventional liquid-phase sintering (LPS) in hydrogen and using spark plasma sintering (SPS) in vacuum. The HTA density was shown to depend non-monotonously on the HEBM time that originates from the formation of nonequilibrium solid solutions in the W-Ni-Fe systems during HEBM. The SPS kinetics of the HTA nanopowders was shown to have a two-stage character, the intensity of which depends on the Coble diffusion creep rate and on the intensity of diffusion of the tungsten atoms in the crystal lattice of the γ-phase. The kinetics of sintering of the initial submicron powders has a single-stage character originating from the intensity of the grain boundary diffusion in the γ-phase. The dependencies of the hardness and of the yield strength on the grain sizes were found to obey the Hall–Petch relation. The hardness, strength, and dynamic strength in the compression tests of the fine-grained tungsten alloys obtained using SPS and LPS were studied.

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Section: Introductionmentioning

confidence: 99%

Effect of High-Energy Ball Milling Time on the Density and Mechanical Properties of W-7%Ni-3%Fe Alloy

Нохрин

Малехонова

Чувильдеев

et al. 2023

Metals

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show abstract

“…Heavy tungsten alloys (HTAs) of the W-Ni-Fe system with the W contents over 85-90% have a number of unique characteristics: simultaneous increased density, strength, and plasticity at room temperature [1][2][3][4][5], high characteristics of dynamic strength [6,7], high radiation resistance, etc. The industrial tungsten alloys with 90-95%W obtained by conventional liquid-phase sintering (LPS) have the density of 17-19 g/cm 3 , the ultimate strength up to 1000 MPa, and elongation to failure up to 25-30% at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of High Energy Ball Milling Time on the Density and Mechanical Properties of W-7%Ni-3%Fe Alloy

Нохрин¹,

Малехонова²,

Чувильдеев³

et al. 2023

Preprint

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The present work was aimed at the investigation of effect of High Energy Ball Milling (HEBM) time on the sintering kinetics, structure, and properties of heavy tungsten alloy (HTA) W-7%Ni-3%Fe. The HTA samples were obtained from the nanopowders (20-80 nm) by conventional liquid phase sintering (LPS) in hydrogen and by Spark Plasma Sintering (SPS) in vacuum. The HTA density was shown to depend on the HEBM time non-monotonously that originates from the formation of non-equilibrium solid solutions in the W-Ni-Fe systems during HEBM. The SPS kinetics of the HTA nanopowders was shown to have a two-stage character, the intensity of which depends on the Coble diffusion creep rate and on the intensity of diffusion of the tungsten atoms in the crystal lattice of the -phase. The kinetics of sintering of the initial submicron powders have a single-stage character originating from the intensity of the grain boundary diffusion in the -phase. The dependencies of the hardness and of the yield strength on the grain sizes were found to obey the Hall-Petch relation. The hardness, strength, and dynamic strength in the compression tests of the fine-grained tungsten alloys obtained by SPS and LPS were studied.

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“…Titanium carbide TiC attracts attention as being a high-melting, ultrahard, and wear-resistant material with high electric conductivity and corrosion resistance [27][28][29][30]. Alongside with high-strength and high-density alloys based on tungsten, which demonstrate high penetration strength upon shock interaction, porous composite tungstenbased materials alloyed with high-strength components of the type of tungsten carbides present some features of interest [31,32].…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling of carbides behavior under high-energy liading

Maevskii

2022

Technical Physics

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The results of research on modeling thermodynamic parameters ofshock-wave loading of carbides with different stoichiometric ratios arepresented. The carbides are considered as a mixture of carbon with thecorresponding component. The calculations of pressure, compression andtemperature values under shock-wave loading for solid and porous carbides inthe range of pressure values above 3 GPa are performed. The modelcalculations are compared with the known experimental results on theshock-wave loading of carbides with different porosity values. Thepossibility of modeling the behavior according to the proposed method forcarbides for which there are no experimental data at high dynamic loads isshown. Keywords: Equation of state, shock adiabat, thermodynamic equality,porous heterogeneous medium, carbides\

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Destruction Features of Impactors Made of a Porous Alloy Based on Tungsten with Reinforcing Filler When Interacting with Armored Obstacles

Cited by 4 publications

References 8 publications

Effect of High-Energy Ball Milling Time on the Density and Mechanical Properties of W-7%Ni-3%Fe Alloy

Effect of High-Energy Ball Milling Time on the Density and Mechanical Properties of W-7%Ni-3%Fe Alloy

Effect of High Energy Ball Milling Time on the Density and Mechanical Properties of W-7%Ni-3%Fe Alloy

Numerical modeling of carbides behavior under high-energy liading

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