Thermal expansion evolution of metastable beta Ti-15Mo alloy during linear heating

0500210 - ÚJF 2019 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Zháňal, P. - Beran, Přemysl - Hansen, T. C. - Šmilauerová, J. - Stráský, J. - Janeček, M. - Harcuba, P.
Thermal expansion evolution of metastable beta Ti-15Mo alloy during linear heating.
IOP Conference Series: Materials Science and Engineering. Vol. 461. Bristol: IOP Science, 2018, č. článku 012094. ISSN 1757-899X.
[5th International Conference Recent Trends in Structural Materials (COMAT 2018). Pilsen (CZ), 14.11.2018-16.11.2018]
Institucionální podpora: RVO:61389005
Klíčová slova: neutron diffraction * thermal expansion * beta titanium alloy
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

Thermal expansion measurement was employed for characterization of phase transformations occurring in metastable beta titanium alloy (Ti-15Mo) during linear heating with three different heating rates. Effects of the transformations on materials dimensions is discussed and compared with changes of lattice parameters of present phases obtained from in-situ powder neutron diffraction. The shrinkage of the material with increasing temperature at about 300 °C was attributed to the decrease of lattice parameter of beta phase, which occurs due to diffusion of alloying elements out of omega phase. Complete dissolution of omega phase was detected at 560 °C regardless of the heating rate.
Trvalý link: http://hdl.handle.net/11104/0292324