Issues »  Volume 7, Issue 4

Strength and Plasticity of the Sintered Materials on the Base of a Titanium Nanolaminate Ti$_{3}$SiC$_{2}$

S. O. Firstov, Eh. P. Pechkovsky, V. F. Gorban’

I. M. Frantsevich Institute for Problems in Materials Science, NAS of Ukraine, 3 Academician Krzhyzhanovsky Str., UA-03142 Kyiv, Ukraine

Received: 02.06.2006. Download: PDF

By the example of one of the most investigated ternary compounds of a new class of materials—nanolaminates—titanium silicon carbide Ti$_{3}$SiC$_{2}$ fabricated by the method of reactionary sintering of a powder mixture of elements and binary compounds, the system analysis and generalization of an influence of the investigated structural and phase changes occurring in this material at various kinds of processing on regularities, features and mechanisms of deformation, strengthening and fracture processes within the temperature interval of 20–1300°C are executed. Opportunities of an increase of the plasticity, strength and fracture characteristics of Ti$_{3}$SiC$_{2}$ in a porous state in comparison with a compact one are determined. As shown, the decrease of strength of porous materials can be compensated appreciably, and in some cases, it is exceeded by the use of some factors, which are as follows: refinement of grain structure, high-temperature thermomechanical treatment, fabrication of two-phase in-situ Ti$_{3}$SiC$_{2}$/TiC composite, nitriding of a high-porous material. Basic physics of a simultaneous increase of the characteristics of low-temperature plasticity, high-temperature strength and fracture stress for this material in compact and porous states is developed.

Keywords: Ti$_{3}$SiC$_{2}$ titanium siliceous carbide, structural state, grain structure, thermomechanical treatment, Ti$_{3}$SiC$_{2}$/TiC two-phase $in-situ$ composite, nitriding, mechanical properties.

PACS: 62.20.Fe, 81.05.Je, 81.05.Ni, 81.05.Rm, 81.20.Ev, 81.20.Wk, 81.40.Lm

DOI: https://doi.org/10.15407/ufm.07.04.243

Citation: S. O. Firstov, Eh. P. Pechkovsky, and V. F. Gorban’, Strength and Plasticity of the Sintered Materials on the Base of a Titanium Nanolaminate Ti$_{3}$SiC$_{2}$, Usp. Fiz. Met., 7, No. 4: 243—281 (2006) (in Russian), doi: 10.15407/ufm.07.04.243

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