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Сибирский государственный университет
науки и технологий имени академика М.Ф. Решетнева

Сибирский аэрокосмический журнал
ISSN 2712-8970 (Print) ISSN 2782-5760 (on-line)

Сведения об образовательной организации

UDK 621.762 DoI: 10.31772/2587-6066-2018-19-1-108-119
STUDY OF CONSOLIDATION FEATURES FOR FRAGMENTALLY NANOSTRUCTURED HARD METAL COMPOSITES
Yu. I. Gordeev1, V. B. Jasinski1, N. E. Anistratenko1, A. S. Binchurov1, V. N. Vadimov1, 2*
1Siberian Federal University 79/10, Svobodny Av., Krasnoyarsk, 660041, Russian Federation 2JSC “Academician M. F. Reshetnev” Information Satellite Systems” 52, Lenin Str., Zheleznogorsk, Krasnoyarsk region, 662972, Russian Federation *E-mail: vladimir-vadimov@mail.ru
The results of experimental studies combined with modeling and prediction methods for the properties of hard metal composites show that modification with additives of ceramic nanoparticles and composite powders (WC-Co) allows to control microstructure parameters and provides the increase in binding durability and the level of physicomechanical properties of a hard alloy in general. Simultaneous complex application of submicrocrystalline WC carbides coated with Co layer and alloying additives of Al2O3 nanoparticles – grain growth inhibitors of the main phase, can be considered as the most perspective direction of nanostructured hard metal with increased hardness, strength and crack resistance production. The coating of carbide particles with a binder layer is an effective starting method that allows to obtain a volumetric billet with maintaining the unique properties of the initial nanopowders and ensures a uniform distribution of the phases (WC, Co, Al2O3). Such a multiphase fragmented nanostructured composite is characterized by additional heterogeneity, determined by differences in size and elastic phases properties. By combining the sizes and properties of the phase components in such a heterogeneous composite, it is possible to provide an increase in the fracture energy, i. e., Palmkvist crack resistance up to 16–18 MPa m1/2 (due to inhibition on nanoparticles inclusions, stress reliefs and changes in intercrystalline crack trajectory, its length decrease). Based on the proposed stereological models and the experimentally established relationships between composition and microstructure parameters, the required volume concentrations of nanoparticles additives and composite powders (WC–Co) were determined.
hard metal composites, nanopowders of ceramic, inhibitors, composite carbides, modeling and microstructure parameters, fracture resistance.
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Gordeev Yuri Ivanovic – Cand. Sc., Docent, Department of Design-engineering ensuring machine-building

production, Polytechnic Institute of Siberian Federal University. E-mail: tms-mtf@rambler.ru.

Jasinski Vitaly Bronislavovich – Cand. Sc., Docent, Department of Design-engineering ensuring machine-building

production, Polytechnic Institute of Siberian Federal University. E-mail: VYasinskiy@sfu-kras.ru.

Anistratenko Nikolay Evgenievich – postgraduate student, Department of Design-engineering ensuring machinebuilding

production, Polytechnic Institute of Siberian Federal University.

Binchurov Aleksandr Sergeevich – postgraduate student, Department of Design-engineering ensuring machinebuilding

production, Polytechnic Institute of Siberian Federal University. E-mail: mexanixs@mail.ru.

Vadimov Vladimir Nikolaevich – the 2nd category design engineer, JSC “Academician M. F. Reshetnev

“Information Satellite Systems”. Е-mail: Vladimir-vadimov@mail.ru.


  STUDY OF CONSOLIDATION FEATURES FOR FRAGMENTALLY NANOSTRUCTURED HARD METAL COMPOSITES