40 Result(s)

Article

Specific Features of Temperature Distribution During Spark Plasma Sintering of Two or More Materials Simultaneously

To determine the temperature distribution both on contact boundaries and directly in each of two materials during their simultaneous spark plasma sintering, the solution of the thermal problem has been used an...

V. V. Krizhanovskii, V. I. Mali in Journal of Engineering Physics and Thermophysics (2023)

Article

Discrete Element Study of Granule Consolidation

A discrete element model of granular compaction is presented, in which only the elastic interaction force is taken into account. Granules are considered as a set of nodes that can break or link with ...

V. V. Krizhanovsky, V. I. Mali, E. R. Pruuel in Physical Mesomechanics (2022)

Article

On the Matter of Obtaining High-Density Corundum Ceramics with a Defect-Free Polished Surface and Low Roughness by SPS

It is shown that in principle corundum ceramics with close to theoretical density and a defect-free polished surface with low roughness can be obtained by means of SPS using finely dispersed, unaggregated, mag...

A. G. Anisimov, V. A. Bezlepkin, V. I. Mali in Glass and Ceramics (2022)

Article

Effect of Preliminary Treatment on Microstructure, Mechanical Properties and Fracture of Ni₃Al Samples Synthesized by Spark Plasma Sintering

A comparative study of microstructure parameters and mechanical property characteristics of consolidated Ni₃Al samples formed by spark plasma sintering after a preliminary short-term mechanical activation and mix...

D. A. Osipov, I. V. Smirnov, K. V. Grinyaev, A. D. Korotaev… in Russian Physics Journal (2021)

Article

Studying the Laser Welding of Porous Metals with the Application of Compact Inserts and Nanopowders

The effect of thermal regimes and some technological methods (the application of intermediate compact metal inserts and nanomodifying additives) on the quality of laser-welded permanent joints of porous titani...

A. N. Cherepanov, V. O. Drozdov, V. I. Mali… in Physics of Metals and Metallography (2021)

Article

Microstructure and Microhardness of a Multicomponent System After Mechanical Activation and Spark Plasma Sintering

I. A. Ditenberg, M. A. Korchagin, I. V. Smirnov, K. V. Grinyaev… in Russian Physics Journal (2020)

Article

The Influence of Duration of Preliminary Mechanical Activation on Microhardness of Specimens of Ni₃Al Intermetallide Synthesized Under Conditions of Spark Plasma Sintering

I. A. Ditenberg, M. A. Korchagin, V. V. Melnikov, D. A. Osipov… in Russian Physics Journal (2019)

Article

Effect of Hardening Heat Treatment on the Structure and Properties of a Three-Layer Composite of Type ‘VT23 – 08ps – 45KhNM’ Obtained by Explosion Welding

Bimetals produced by explosion welding of titanium alloy VT23 and steel 45KhNM through an intermediate layer of steel 08ps followed by a heat treatment consisting of quenching and tempering are studied. The th...

D. V. Lazurenko, I. A. Bataev, V. I. Mali, M. A. Esikov… in Metal Science and Heat Treatment (2019)

Article

Structural Transformations Occurring upon Explosive Welding of Alloy Steel and High-Strength Titanium

Features of the structure of a layered material welded by explosion of high-strength titanium alloy and tool roller steel with an intermediate layer of the structural low-carbon steel have been studied. The st...

D. V. Lazurenko, I. A. Bataev, V. I. Mali… in Physics of Metals and Metallography (2018)

Article

Specific Features of Sheet Acceleration under Conditions of Magnetic Pulse Welding

Magnetic pulse welding differs from explosive welding only by sources of energy for sheet acceleration: magnetic field energy is used instead of explosion energy. Magnetic field interaction with the sheet has ...

A. G. Anisimov, V. I. Mali in Combustion, Explosion, and Shock Waves (2018)

Article

Microstructure and mechanical properties of Ti/Ta/Cu/Ni alloy laminate composite materials produced by explosive welding

Ti/Ni alloy-based laminate composite materials were produced by explosive welding with two thin intermediate layers of tantalum and copper placed between Ti and Ni alloy layers. The influence of the thickness ...

V. I. Mali, A. A. Bataev, Iu. N. Maliutina… in The International Journal of Advanced Manu… (2017)

Article

Laser welding of stainless steel to titanium using explosively welded composite inserts

In paper, weld joints between VT1-0 titanium and AISI 321 austenitic stainless steel using laser welding were obtained. To improve the quality and strength properties of joints, two types (SS–Cu–Nb/Ta–Ti) of e...

A. N. Cherepanov, V. I. Mali… in The International Journal of Advanced Manu… (2017)

Article

Synthesis of ceramics based on zirconium and hafnium borides by spark plasma sintering and study of its thermal oxidative stability

Ultra-high-temperature ceramic materials based on zirconium and hafnium borides were obtained by spark plasma sintering. The samples were thermal-shock tested on a gas-dynamic setup in an oxidizing atmosphere;...

Yu. B. Lyamin, V. Z. Poilov, E. N. Pryamilova… in Russian Journal of Inorganic Chemistry (2016)

Article

Microhardness of Ceramic Obtained from Oxide Nanopowders by the Conventional and SPS Methods

Spark plasma sintering (SPS) was used to create a fine-grain ceramic based on nanosize powders of 14 different oxides (zinc, copper, chromium, cobalt, tungsten, magnesium, niobium, titanium, aluminum, yttrium,...

V. I. Lysenko, A. G. Anisimov, V. I. Mali in Glass and Ceramics (2015)

Article

Laser welding of stainless steel with a titanium alloy with the use of a multilayer insert obtained in an explosion

CO₂-laser welding of 12Kh18N10T stainless steel and a VT1-0 titanium alloy with the use of a composite insert obtained by means of explosive welding of four sheets (VT1-0 titanium, high-purity tantalum, M1 copper...

A. N. Cherepanov, A. M. Orishich, V. I. Mali in Combustion, Explosion, and Shock Waves (2014)

Article

Microhardness of ceramics produced from different alumina nanopowders by different techniques

Fine-grained ceramics (with a grain size on the order of a micron) have been produced by the spark plasma sintering (SPS) of various alumina nanopowders. We have compared the microhardness of ceramic samples p...

V. I. Lysenko, A. G. Anisimov, V. I. Mali, V. A. Emel’kin in Inorganic Materials (2014)

Article

Structural Changes of Surface Layers of Steel Plates in the Process of Explosive Welding

Structural changes develo** in surface layers of plates from steel 20 in the process of explosive welding are studied with the help of light metallography and scanning and transmission electron microscopy. M...

I. A. Bataev, A. A. Bataev, V. I. Mali, V. A. Bataev… in Metal Science and Heat Treatment (2014)

Article

Numerical and experimental simulation of wave formation during explosion welding

The results of numerical and experimental simulation of wave formation under an oblique impact of metal plates during explosion welding are presented. The numerical simulation was carried out on the basis of t...

S. K. Godunov, S. P. Kiselev, I. M. Kulikov… in Proceedings of the Steklov Institute of Ma… (2013)

Article

Nucleation and growth of titanium aluminide in an explosion-welded laminate composite

Processes of nucleation and growth of titanium aluminide in a 23-layer aluminum-titanium composite produced by explosion welding have been studied. In the vortex zones of seven upper welds, microvolumes of mel...

I. A. Bataev, A. A. Bataev, V. I. Mali… in The Physics of Metals and Metallography (2012)