Investigation of Structure of the Quenched Cast Biocompatible Ti–18Nb–$х$Si Alloys

О. М. Shevchenko, L. D. Kulak, M. M. Kuzmenkо, A. V. Kotko, S. O. Firstov

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

Received: 25.05.2017. Download: PDF

Investigation of the quenched cast Ti–18Nb–$х$Si alloys with silicon content from 0.6 to 1.2% wt. in comparison with the binary Ti–1Si alloy is carried out. Influence of silicon and quenching temperature on the structure and hardness of the alloys is investigated. As shown, in the Ti–18Nb–$х$Si alloys ($х$ = 0.6–1.2% wt.), the martensite of different morphology and dispersion is formed during hardening in dependence on the heat temperature. The electron microscopy and microanalysis show the presence of (Ti,Nb)$_3$Si silicides in the alloys, the size and quantity of which depend on both the silicon content and the quenching temperature.

Key words: titanium alloys, martensite, silicides, quenching, structure.

URL: http://mfint.imp.kiev.ua/en/abstract/v39/i06/0823.html

DOI: https://doi.org/10.15407/mfint.39.06.0823

PACS: 64.75.Bc, 64.75.Nx, 81.30.Kf, 81.30.Mh, 81.40.Cd, 81.40.Ef, 87.85.jj

Citation: О. М. Shevchenko, L. D. Kulak, M. M. Kuzmenkо, A. V. Kotko, and S. O. Firstov, Investigation of Structure of the Quenched Cast Biocompatible Ti–18Nb–$х$Si Alloys, Metallofiz. Noveishie Tekhnol., 39, No. 6: 823—837 (2017) (in Ukrainian)


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