46 Result(s)
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Article
Microstructure and Mechanical Properties of a (TiB + TiB2 + TiC)/Ti–6Al–4V Composite Material Formed in the Process of in situ Synthesis in Selective Laser Melting
A study has been made of the physicomechanical properties of a heterogeneous material based on TiB, TiB2, TiC, and B4C ceramics and a Ti–6Al–4V metal alloy formed by the method of selective laser melting. Conside...
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Article
Experimental Investigation of the Effect of Laser Treatment on the Resistance of a Cermet Coating to a High-Speed Impact
For the first time, experimental investigations of the resistance of a cermet coating formed by a combined method (cold gas-dynamical spraying with subsequent laser treatment) to high-speed impact was carried ...
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Article
Prospects of Using Synchrotron Radiation for Diagnostics of the Structural-Phase Composition of Composite Materials
Diagnostics of the structure of materials is necessary for determining subsequent technological operations in the production of finished products. In the present paper, we propose to use synchrotron radiation ...
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Article
Destruction of Heterogeneous Laser Welded Joints of Aluminum–Lithium and Titanium Alloys
A comprehensive study has been made of the destruction of welded joints of the titanium alloy VT20 of a Ti–Al–Zr–Mo–V system and high-strength aluminum–lithium alloy V-1461 of an Al–Cu–Li system. The welds wer...
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Article
EFFECT OF LASER IMPACT PARAMETERS ON THE FORMATION OF A POOL OF THE MOLTEN B4C — Ti–6Al–4V CERMET MIXTURE
Results of a series of experiments aimed at studying laser cladding of individual tracks with the use of the B4C–Ti–6Al–4V cermet powder mixture are reported. The influence of laser cladding parameters (radiation...
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Article
INFLUENCE OF HEAT TREATMENT OF LASER-WELDED JOINTS OF ALUMINUM-LITHIUM ALLOYS ON PLASTIC FLOW INSTABILITY
The experimentally observed evolution of unstable plastic flow of laser-welded specimens of Al–6Mg–2Li, Al–1.6Cu–1.1Mg–1.8Li, and Al–3.4Cu–0.66Mg–1.5Li aluminum–lithium alloys under different heat treatment co...
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Article
CREATION OF A HETEROGENEOUS MATERIAL BASED ON THE TITANIUM ALLOY AND TITANIUM BORIDE BY SELECTIVE LASER MELTING
Results of theoretical and experimental investigations of physical and mechanical properties of a heterogeneous material based on the TiB ceramics and Ti–6Al–4V metallic alloy obtained by means of selective la...
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Article
LASER WELDING OF DISSIMILAR MATERIALS BASED ON THERMALLY HARDENED ALUMINUM ALLOYS
Results of an experimental study of the strength characteristics and structural-phase composition of a nondetachable connection of dissimilar materials based on thermally hardened aluminum alloys D16T of the A...
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Article
Formation of B4C – Ti-6Al-4V Cermet Coatings by the Method of SLM
The process of formation of a multilevel multilayer B4C – Ti-6Al-4V cermet coating by the method of SLM is studied. The coating is characterized by presence of heterogeneous zones differing in the mechanical prop...
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Article
CREATION OF A FUNCTIONALLY GRADIENT MATERIAL BY THE SELECTIVE LASER MELTING METHOD
The paper presents the results of an experimental study of the microstructure and microhardness of a functionally gradient material fabricated from 316L stainless steel and tungsten carbide (WC) ceramic partic...
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Article
Deposition of Cermet Coatings on the Basis of Ti, Ni, WC, and B4C by Cold Gas Dynamic Spraying with Subsequent Laser Irradiation
This paper studies the formation of cermet coatings by a combined additive manufacturing technology on the basis of cold gas dynamic spraying and subsequent laser irradiation. The coatings are made of titaniu...
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Article
Laser Welding of Dissimilar Materials Based on VT20 Titanium and V-1461 Aluminum Alloys
This paper describes the experimental study of strength characteristics and the microstructure of a permanent joint of dissimilar materials (VT20 titanium alloy and V-1461 aluminum alloy), obtained by laser bu...
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Article
Influence of Heat Treatment on the Fracture of a Welded Joint of an Al-Cu-Li Aircraft Alloy at Different Temperatures
Results of an experimental study of how temperature affects the fracture of laser welded joints of an Al-Cu-Li aircraft aluminum alloy are presented. A comparison is made of the deformation and fracture of wel...
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Article
Similarity Laws in Laser Cladding of Cermet Coatings
The influence of the laser beam parameters (power, motion velocity, and focus position) on the characteristics of the track being formed (size, elemental composition, and microhardness) is studied. If the diff...
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Article
Temperature Effect on the Fracture of Laser Welded Joints of Aviation Aluminum Alloys
This paper describes an experimental study of a temperature effect on the fracture of laser welded joints of Mg- and Cu-containing aviation aluminum alloys. The fracture of alloys and their welded joints under...
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Article
Effect of Heat Treatment on Mechanical and Microstructural Properties of the Welded Joint of the Al–Mg–Li Alloy Obtained by Laser Welding
Laser welding of the 1420 alloy of the Al–Mg–Li system is experimentally studied for the purpose of its optimization. Various modes of heat treatment of fixed joints obtained by means of laser welding are cons...
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Article
Effect of Mg and Cu on mechanical properties of high-strength welded joints of aluminum alloys obtained by laser welding
Results of experimental investigations of welded joints of high-strength aluminum–lithium alloys of the Al–Cu–Li and Al–Mg–Li systems are reported. The welded joints are obtained by means of laser welding and ...
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Article
Creation of heterogeneous materials on the basis of B4C and Ni powders by the method of cold spraying with subsequent layer-by-layer laser treatment
A method is proposed for creating principally new functionally graded heterogeneous materials on the basis of B4C ceramic powders with different mass fractions in the original mixture and plastic metallic additiv...
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Article
Energy balance in high-quality cutting of steel by fiber and CO2 lasers
The energy balance of laser cutting of low-carbon and stainless steel sheets with the minimum roughness of the cut surface is experimentally studied. Experimental data obtained in wide ranges of cutting parame...
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Article
Investigation of the technology of laser welding of aluminum alloy 1424
In this study, certain technological variants of the laser welding of alloy 1424 of the Al–Mg–Li–Zr system are considered with the purpose of obtaining the durability level of the welded joint, which is close ...
