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INFLUENCE OF DEFORMATION ON THE STRUCTURE AND MECHANICAL PROPERTIES OF A TITANIUM-BASED ALLOY OBTAINED BY SELF-PROPAGATING HIGH TEMPERATURE SYNTHESIS

1 TSYGANOV Alexey I.
Co-authors:
2 MANESCU Adrian 3 GELINSKY Michael 1 TSYGANOV Igor A.
Institutions:
1 Lipetsk State Technical University, Metallurgical Institute, Lipetsk, Russian Federation, zyganov@daad-alumni.de
2 Marche Polytechnic University, Ancona, Italy, EU, a.manescu@alisf1.univpm.it
3 Dresden University of Technology, University Hospital Carl Gustav Carus, Centre for Translational Bone, Joint and Soft Tissue Research, Dresden, Germany, EU, michael.gelinsky@tu-dresden.de
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:
1771-1776
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:
468 views / 199 downloads
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Abstract

A fine-grained alloy with a Ti-48Al-2Nb-2Cr (in atom pct) composition was prepared by Self-propagating High temperature Synthesis (SHS). The relationship among different compression ratio, microstructure, porosity, density, mechanical properties and residual stresses of the Ti-48Al-2Nb-2Cr alloy was studied by scanning electron microscopy, X-ray diffraction, neutron diffraction and mechanical testing. The results show that the morphology of the SHS-synthesized alloy is regular with the size of 4−25 μm. The main γ-TiAl phase and the α2Ti3Al and TiAl3 phases were observed in the samples. The cell parameters of the γTiAl crystal lattice after SHS were determined. It was observed that during compression the processes of hardening as well as those of increasing residual stresses take place. The residual strains and stresses in bulk of the material were calculated.

Keywords: Self-propagating high temperature synthesis, Ti-48Al-2Nb-2Cr, titanium aluminides, neutron diffraction, mechanical properties

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