PHASE AND MECHANICAL CHANGES OF TI5AL4V ALLOY AFTER HEAT TREATMENT IN VACUUM

1 NIKOLOVA Maria P.
Co-authors:
1 YANKOV Emil 2 PETROV Peter 1 NIKOLOV Danail 2 VALKOV Stefan 1 ZAHARIEVA Vanya 2 ORMANOVA Maria
Institutions:
1 University of Ruse “A. Kanchev”, Department of Material Science and Technology, Bulgaria, EU, mpnikolova@uni-ruse.bg
2 Bulgarian Academy of Sciences, Institute of Electronics, Sofia, Bulgaria, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1899-1904
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
59 views / 22 downloads
Abstract

Exploration of biocompatible materials with improved mechanical properties imposes a change in the chemical composition of the (α+β) titanium alloys used in the modern implantology. The increased quantity of some toxic alloying elements could eventually cause undesirable biological effects in the human body. The high Al content could lead to reducing implant in vivo survival. Simultaneously, the low Al concentration will decrease the mechanical strength of the alloy but the alloy is expected to have lower cytotoxicity and improved plasticity. The present study aims at determining the maximum vacuum heat treatment response at various cycles of solution treatment, water quenching and precipitation of Ti5Al4V alloy. For this purpose, the critical limits for the heat treatment technological parameters were defined according to the XRD analysis and Vickers hardness test results and they were taken into account for determining the optimum heat treatment process.

Keywords: (α+β) titanium alloys, vacuum heat treatment, XRD, hardness

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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