Lattice defects in severely deformed biomedical Ti-6Al-7Nb alloy and thermal stability of its ultra-fine grained microstructure

Biomedical Ti-6Al-7Nb alloy was prepared by a dedicated thermal treatment followed by equal-channel angular pressing (ECAP) and extrusion. Ultra-fine grained duplex microstructure consisting of deformed primary α-grains and fragmented α + β region was achieved. Microstructural changes during heating...

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Veröffentlicht in:	Journal of alloys and compounds 2019-06, Vol.788, p.881-890
Hauptverfasser:	Bartha, Kristína, Zháňal, Pavel, Stráský, Josef, Čížek, Jakub, Dopita, Milan, Lukáč, František, Harcuba, Petr, Hájek, Michal, Polyakova, Veronika, Semenova, Irina, Janeček, Miloš
Format:	Artikel
Sprache:	eng
Schlagworte:	Biocompatibility Biomedical materials Clusters Crystal defects Deformation mechanisms Deformation resistance Dislocation density Electrical resistance Equal channel angular pressing Extrusion Heat treatment Heating Lattice vacancies Microhardness Microstructure Positron annihilation Positron annihilation spectroscopy Recrystallization Scanning electron microscopy Solid solutions Solution strengthening Spectroscopy Spectrum analysis Substitutional solid solutions Surgical implants Thermal stability Titanium alloys Titanium base alloys X-ray diffraction
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