Structure and Properties of Directionally Solidified Alloy of B$_4$C–TaB$

Issues » Volume 42, Issue 12

Structure and Properties of Directionally Solidified Alloy of B$_4$C–TaB$_2$–SiC System

M. I. Upatov$^{1}$, E. R. Abdullaieva$^{1}$, V. V. Bolbut$^{2}$, Yu. I. Bogomol$^{1}$

$^{1}$National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
$^{2}$Otto von Guericke University, 2 Universitätsplatz, DE-39106 Magdeburg, Germany

Received: 04.06.2019; final version - 21.10.2020. Download: PDF

The 27B$_4$C–25.5TaB$_2$–47.5SiC (% mol.) composite is prepared by a floating zone method based on crucibleless zone melting of compacted powders. The influence of crystallization rate on the structure and properties of the composite is studied. Vickers hardness, fracture toughness, and flexural strength of the composite are 32–35 GPa, 4.3–5.2 MPa$\cdot$m$^{1/2}$, and 223–252 MPa, correspondingly.

Key words: ternary eutectic, hardness, fracture toughness, flexural strength, boron carbide, silicon carbide, tantalum diboride.

URL: http://mfint.imp.kiev.ua/en/abstract/v42/i12/1701.html

DOI: https://doi.org/10.15407/mfint.42.12.1701

PACS: 61.05.cp, 61.43.Gt, 62.20.-x, 62.20.M-, 68.37.Hk

Citation: M. I. Upatov, E. R. Abdullaieva, V. V. Bolbut, and Yu. I. Bogomol, Structure and Properties of Directionally Solidified Alloy of B$_4$C–TaB$_2$–SiC System, Metallofiz. Noveishie Tekhnol., 42, No. 12: 1701—1713 (2020) (in Ukrainian)

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