Ingress of hydrogen is often linked to catastrophic failure of Ti-alloys. Here, we quantify the hydrogen distribution in fully \b{eta} and {\alpha}+\b{eta} Ti-Mo alloys by using atom probe tomography. Hydrogen does not segregate at grain boundaries in the fully \b{eta} sample but segregates at some {\alpha}/\b{eta} phase boundaries with a composition exceeding 20 at.% in the {\alpha}+\b{eta} sample. No stable hydrides were observed in either sample. The hydrogen concentration in \b{eta} phases linearly decreases from ~13 at. % to ~4 at. % with increasing Mo-content, which is ascribed to the suppression of hydrogen uptake by Mo addition.
@article{arxiv.1812.00981,
title = {Atomic-scale investigation of hydrogen distribution in a Ti-Mo alloy},
author = {Fengkai Yan and Isabelle Mouton and Leigh T. Stephenson and Andrew J. Breen and Yanhong Chang and Dirk Ponge and Dierk Raabe and Baptiste Gault},
journal= {arXiv preprint arXiv:1812.00981},
year = {2018}
}