Thermal stability of TiAl-based intermetallic alloys subjected to high pressure torsion

Thermal stability of TiAl-based intermetallic alloys subjected to high pressure torsion

This paper deals with a study of the structure and thermal stability of intermetallic TiAl-based alloys subjected to high-pressure torsion (HPT). The structural features of the HPT-processed samples have been studied by transmission electron microscopy and X-ray diffraction. In order to study the th...

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Veröffentlicht in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2016-01, Vol.651, p.306-310
Hauptverfasser: Nikitina, M.A., Islamgaliev, R.K., Sitdikov, V.D.
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Aluminides
Bulk deformation
Electron microscopy
Hardening
Hardness measurement
Intermetallic
Intermetallics
Microhardness
Thermal stability
Titanium base alloys
Titanium compounds
Torsion
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Beschreibung
Zusammenfassung:This paper deals with a study of the structure and thermal stability of intermetallic TiAl-based alloys subjected to high-pressure torsion (HPT). The structural features of the HPT-processed samples have been studied by transmission electron microscopy and X-ray diffraction. In order to study the thermal stability of ultrafine-grained (UFG) structure, the dependence of microhardness on the annealing temperature in a temperature range of 150–1000°С has been investigated. The effect of heat treatment on the grain structure stability and microhardness of the HPT-processed samples is discussed.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2015.10.121