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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2014, Volume 55, Issue 1, Pages 40–56
(Mi pmtf1099)
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This article is cited in 1 scientific paper (total in 1 paper)
Obtaining metal-based composites with hardening by titanium diboride nanoparticles
M. P. Bondar'ab, E. V. Karpovab a Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
b Novosibirsk State University, Novosibirsk, 630090, Russia
Abstract:
The mechanism of obtaining high-strength mesocomposite materials with a cellular microstructure is studied. It is shown that the formation of the mesocomposite microstructure is determined by the method of pressing characterized by high strains and strain rates, and also by the mesocomposite composition; the high-plasticity matrix and nondeformable particles of the hardening phase, which are not bonded to the mesocomposite matrix, assist in the process of self-organization, i.e., formation of a cellular microstructure. The set of mesocomposite properties is studied to understand the general laws of mesocomposite formation and optimize the composition. A composite with an optimal composition is obtained, which retains high electrical conductivity of copper and sufficiently high plasticity necessary for its effective application; its strength is greater than the base strength by an order of magnitude; moreover, its strength and wear resistance are much higher than those of dispersion-hardened alloys obtained by the method of internal oxidation. The results obtained can be used for creating new composite materials.
Keywords:
nanocomposite, mesocomposite, quasi-dynamic pressing, mechanism of formation, microstructure, mechanical properties.
Received: 10.06.2013 Revised: 27.06.2013
Citation:
M. P. Bondar', E. V. Karpov, “Obtaining metal-based composites with hardening by titanium diboride nanoparticles”, Prikl. Mekh. Tekh. Fiz., 55:1 (2014), 40–56; J. Appl. Mech. Tech. Phys., 55:1 (2014), 30–43
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https://www.mathnet.ru/eng/pmtf1099 https://www.mathnet.ru/eng/pmtf/v55/i1/p40
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