Influence of deformation on the structure and mechanical properties of a titanium-based alloy obtained by self-propagating high temperature synthesis

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Contributors

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 α 2 -Ti 3 Al and TiAl 3 phases were observed in the samples. The cell parameters of the γ-TiAl 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.

Details

Original languageEnglish
Title of host publicationMETAL 2018 - 27th International Conference on Metallurgy and Materials, Conference Proceedings
PublisherTANGER Ltd.
Pages1771-1776
Number of pages6
ISBN (electronic)9788087294840
Publication statusPublished - 2018
Peer-reviewedYes

Publication series

SeriesMETAL : International Conference on Metallurgy and Materials, Conference Proceedings

Conference

Title27th International Conference on Metallurgy and Materials, METAL 2018
Duration23 - 25 May 2018
CityBrno
CountryCzech Republic

External IDs

ORCID /0000-0001-9075-5121/work/160047986

Keywords

Keywords

  • Mechanical properties, Neutron diffraction, Self-propagating high temperature synthesis, Ti-48Al-2Nb-2Cr, Titanium aluminides