Influence of TiC powder particles on structural features and mechanical properties of spark plasma sintered Ni₃Al | Izvestiya vuzov. Fizika. 2020. № 9. DOI: 10.17223/00213411/63/9/119

Influence of TiC powder particles on structural features and mechanical properties of spark plasma sintered Ni₃Al

Intermetallic Ni₃Al and Ni₃Al+TiC composite specimens were consolidated by spark plasma sintering of the precursors obtained by preliminary mechanical activation of 3Ni-Al powder mixture in high-energy ball mills followed by the addition of TiC powder and without it. A comparative study of the influence of TiC was carried out by methods of structural investigation and measurement of mechanical properties. After consolidation, no effect of the introduced particles on the structure parameters of the intermetallic matrix was revealed. Under synthesis conditions and subsequent high-temperature annealings, TiC does not interact with the intermetallic matrix. The presence of coarse TiC particles contributes to the additional embrittlement of the Ni₃Al+TiC composite at room temperature, while at high temperatures, a significant increase in strength and ductility is observed compared to pure Ni₃Al. It was shown that an increase in the testing temperature leads to a change in the fracture mechanisms of the intermetallic matrix and coarse TiC particles.

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Keywords

система никель - алюминий, интерметаллид Ni₃Al, частицы TiC, механическая активация, искровое плазменное спекание, структура, механические свойства, nickel-aluminum system, intermetallic Ni₃Al, TiC particles, mechanical activation, spark plasma sintering, structure, mechanical properties

Authors

Name	Organization	E-mail
Osipov D.A.	National Research Tomsk State University	osipov_ff_tsu@mail.ru
Smirnov I.V.	National Research Tomsk State University; Institute of Strength Physics and Materials Science of SB RAS	smirnov_iv@bk.ru
Grinyaev K.V.	National Research Tomsk State University; Institute of Strength Physics and Materials Science of SB RAS	kvgrinyaev@inbox.ru
Ditenberg I.A.	National Research Tomsk State University; Institute of Strength Physics and Materials Science of SB RAS	ditenberg_i@mail.ru
Korchagin M.A.	Institute of Solid State Chemistry and Mechanochemistry SB RAS	korchag@solid.nsc.ru

Всего: 5

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