Structure and Phase Composition of (TiB)–Ti Metal Matrix Composites Obtained by SHS and Vacuum Sintering

E. N. Korosteleva, V. V. Korzhova

Research output: Contribution to journalArticlepeer-review

Abstract

The structure and phase composition of (TiB)–Ti powder metal matrix composites synthesized by wave combustion with subsequent vacuum sintering are studied. The selected ratio of the reacting components correspond to the presence of unreacted titanium in the combustion products. The behavior of the SHS composite powders synthesized by vacuum sintering is estimated. An analysis of the volumetric and structural changes in the synthesized powder compacts demonstrates that at sintering temperatures of 1300–1350°С, no significant structure transformation occurs, and a slight decrease in the compact volume and the residual pore content is observed. A qualitative phase composition is maintained regardless of the amount of excess titanium and the selected temperature of sintering of the metal matrix composite. The vacuum sintering condition facilitates the redistribution of proportions of phases formed in a nonequilibrium state during synthesis. After sintering, the titanium diboride phase content decreases in favor of a more stable titanium monoboride.

Original languageEnglish
Pages (from-to)1195-1201
Number of pages7
JournalRussian Physics Journal
Volume63
Issue number7
DOIs
Publication statusPublished - Nov 2020
Externally publishedYes

Keywords

  • metal matrix composite
  • phase composition
  • self-propagating high-temperature synthesis (SHS)
  • titanium borides
  • vacuum sintering

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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