ISIS Neutron and Muon Source Data Journal

The local structure in high-entropy alloy deuterides probed by neutron total scattering

Abstract: High-entropy alloys (HEAs) typically contain four or more principle elements in approximately equimolar amounts. It was recently discovered by the co-proposer that a body-centered cubic HEA of TiVZrNbHf absorbs hydrogen to form a metal hydride with a hydrogen-to-metal ratio (H/M) of 2.5. Such a high H/M ratio has never before been observed for pure transition metal hydrides and requires occupation of interstitial sites that are not accessible for hydrogen in simpler alloys with the same structure. It has been suggested that the large H/M is due to large local lattice strain.The proposed project will investigate the local structure in the HEA TiVZrNbHf and the corresponding deuteride by neutron total scattering. We would also like to consider some related compounds that have varying levels of local lattice strain to investigate how this influence the short-range order in the metal matrix.

Principal Investigator: Dr Magnus Sorby
Experimenter: Professor Martin Sahlberg
Experimenter: Mr Magnus Moe Nygård
Experimenter: Dr Gustav Ek
Local Contact: Professor David Keen

DOI: 10.5286/ISIS.E.RB1810118

ISIS Experiment Number: RB1810118

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Magnus Sorby et al; (2018): The local structure in high-entropy alloy deuterides probed by neutron total scattering, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1810118

Data is released under the CC-BY-4.0 license.