THE EFFECT OF SPARK PLASMA SINTERING ON THE POROSITY AND MECHANICAL PROPERTIES OF TI-15MO ALLOY

1 TERYNKOVÁ Anna
Co-authors:
1 KOZLÍK Jiří 1 BARTHA Kristína 2 CHRÁSKA Tomáš 2 DLABÁČEK Zdeněk 1 STRÁSKÝ Josef
Institutions:
1 Department of Physics of Materials, Charles University, Ke Karlovu 5, 12116 Prague, Czech Republic, EU, annaterynkova@gmail.com
2 Institute of Plasma Physics, Czech Academy of Sciences, Za Slovankou 1782/3, 182 00 Prague, Czech Republic, EU, tchraska@ipp.cas.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1765-1770
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
22 views / 10 downloads
Abstract

Metastable β-titanium alloys are receiving much interest for various applications such as aircraft industry and medicine thanks to their excellent mechanical properties and biocompatibility. The common way of preparing the titanium alloys is hindered by its production costs. Powder metallurgy (PM) approach is a promising route for cost-effective fabrication of titanium alloys due to possibility of near net shaping.In this study, binary biomedical Ti-15Mo alloy was prepared by PM. Gas atomized powder was sintered by spark plasma sintering (SPS) above the β-transus temperature of the studied alloy. The compaction of the powders was accomplished by short-time sintering. The effect of the time of sintering on the porosity and the microhardness in centre part as well as in periphery part of the sample was investigated. The samples revealed significant inhomogeneity – the porosity increases with the distance from the centre of the specimen. With increasing sintering times the porosity decreases and simultaneously the microhardness increases.

Keywords: Powder metallurgy, spark plasma sintering, metastable β-titanium alloys, porosity
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