Machine-learning interatomic potential for W-Mo alloys

Georgios Nikoulis, Jesper Byggmästar, Joseph Kioseoglou, Kai Nordlund, Flyura Djurabekova

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Sammanfattning

In this work, we develop a machine-learning interatomic potential for WxMo1−x random alloys. The potential is trained using the Gaussian approximation potential framework and density functional theory data produced by the Vienna ab initio simulation package. The potential focuses on properties such as elastic properties, melting, and point defects for the whole range of WxMo1−x compositions. Moreover, we use all-electron density functional theory data to fit an adjusted Ziegler–Biersack–Littmarck potential for the short-range repulsive interaction. We use the potential to investigate the effect of alloying on the threshold displacement energies and find a significant dependence on the local chemical environment and element of the primary recoiling atom.
Originalspråkengelska
Artikelnummer315403
TidskriftJournal of Physics. Condensed Matter
Volym33
Utgåva31
Antal sidor11
ISSN0953-8984
DOI
StatusPublicerad - 4 aug. 2021
MoE-publikationstypA1 Tidskriftsartikel-refererad

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