@misc{pyczak_stability_of_2021, 
author={Pyczak, F.,Kononikhina, V.,Stark, A.},
title={Stability of Ordered B2-βO and Disordered BCC-β Phases in Tial - A First Principles Study},
year={2021},
howpublished = {journal article},
doi = {https://doi.org/10.4028/www.scientific.net/MSF.1016.1159},
abstract = {Either at higher temperatures or when a certain alloying element content is exceeded, γ-TiAl alloys contain the β phase (bcc) or its ordered derivate βo (B2). The relatively soft β phase can facilitate hot deformation, but βo is detrimental for creep strength and ductility. Thus, knowledge about βo→β phase transformation is desirable. Surprisingly, even for the binary Ti-Al system it is under discussion whether the ordered βo phase exists. Also, the effect of alloying elements on the β phase ordering is still unclear. In the present work the ordering of the β phase in binary Ti-(39,42,45)Al and ternary Ti-42Al-2X alloys (X=Fe, Cr, Nb, Ta, Mo) which was experimentally investigated by neutron and high energy X-ray diffraction is compared with the results of first principles calculations using density functional theory. Except for Cr the experimentally determined and the predicted behavior correspond.},
note = {Online available at: \url{https://doi.org/10.4028/www.scientific.net/MSF.1016.1159} (DOI). Pyczak, F.; Kononikhina, V.; Stark, A.: Stability of Ordered B2-βO and Disordered BCC-β Phases in Tial - A First Principles Study. Materials Science Forum. 2021. vol. 1016, no. 5, 1159-1165. DOI: 10.4028/www.scientific.net/MSF.1016.1159}}