%0 Journal Article
%A Wu, Chengguang
%A Gong, Yilun
%A Liu, Chang
%A Li, Xuehan
%A Gizer, Gökhan
%A Pistidda, Claudio
%A Körmann, Fritz
%A Ma, Yanming
%A Neugebauer, Jörg
%A Raabe, Dierk
%T Hydrogen accommodation and its role in lattice symmetry in a TiNbZr medium-entropy alloy
%J Acta materialia
%V 288
%@ 1359-6454
%C Amsterdam [u.a.]
%I Elsevier Science
%M PUBDB-2025-00869
%P 120852
%D 2025
%X Refractory medium/high-entropy alloys (M/HEAs) are emerging as promising alternative materials for hydrogen storage and hydrogen combustion engines due to their favorable thermodynamic and kinetic conditions for hydrogen accommodation (for the former) and promising high-temperature mechanical properties (for the latter). A better understanding of hydrogen-metal interactions is necessary to advance the development of this material class, thus helping leverage hydrogen-based applications. Here we reveal the microstructural evolution of a TiNbZr MEA by in-situ synchrotron high-energy X-ray diffraction (HEXRD) during hydrogenation in pure H2 gas at atmospheric pressure. At 500 °C, dissolved hydrogen atoms gradually expand the crystal lattice isotropically, and the body-centered cubic crystal remains stable up to a hydrogen concentration of ∼46.4 at.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:001437968100001
%R 10.1016/j.actamat.2025.120852
%U https://bib-pubdb1.desy.de/record/624400