A novel hydride phase in hydrogen charged Ti3Al |
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| Affiliation: | 1. Institute of Physics, Jan Długosz University in Czȩstochowa, Ave, Armii Krajowej 13/15, Czȩstochowa 42-200, Poland;2. Institute of Physics, Czȩstochowa University of Technology, Ave, Armii Krajowej 19, Czȩstochowa 42-200, Poland |
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| Abstract: | The effect of internal hydrogen on the microstructural modification of Ti3Al (α2) compound was studied by large-angle neutron scattering and transmission electron microscopy. Ti-25 at.% Al(Ti3Al) specimens were exposed to gaseous hydrogen atmosphere at 600°C that resulted in internal hydrogen concentration of 2000 ppm. The hydrogen-charged alloy consisted of a mixture of α2 phase and a novel Ti3AlH phase with the E21, (Pm3m) crystal structure. The lattice parameters and atomic arrangement of the Ti3A1H phase were determined. |
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