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Mo–Si alloys studied by atomistic computer simulations using a novel machine‐learning interatomic potential: thermodynamics and interface phenomena

Lenchuk, Olena ; Rohrer, Jochen ; Albe, Karsten (2024)
Mo–Si alloys studied by atomistic computer simulations using a novel machine‐learning interatomic potential: thermodynamics and interface phenomena.
In: Advanced Engineering Materials, 26 (17)
doi: 10.1002/adem.202302043
Artikel, Bibliographie

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Kurzbeschreibung (Abstract)

A machine-learning interatomic potential for Mo–Si alloys based on the atomic cluster expansion formalism is presented, its performance is validated, and it is applied for studying interface phenomena. Structural parameters, elastic constants, and melting temperatures of the crystalline body-centered cubic Mo, diamond Si, and stable Mo–Si alloys (Mo3Si, Mo5Si3, and MoSi2) are calculated and compared to experimental values. Using the trained potential defect, formation energies are calculated and the thermodynamic stability of various MoxSiy alloys is discussed with focus on Mo3Si. Finally, the intermixing between Mo and Si phases is studied by performing interface simulations of Mo|Si. The crystallization behavior of the Mo3Si phase provides additional evidence for the off-stoichiometric composition of this intermetallic phase.

Typ des Eintrags: Artikel
Erschienen: 2024
Autor(en): Lenchuk, Olena ; Rohrer, Jochen ; Albe, Karsten
Art des Eintrags: Bibliographie
Titel: Mo–Si alloys studied by atomistic computer simulations using a novel machine‐learning interatomic potential: thermodynamics and interface phenomena
Sprache: Englisch
Publikationsjahr: 5 Mai 2024
Ort: Weinheim
Verlag: Wiley-VCH
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Advanced Engineering Materials
Jahrgang/Volume einer Zeitschrift: 26
(Heft-)Nummer: 17
Kollation: 12 Seiten
DOI: 10.1002/adem.202302043
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Kurzbeschreibung (Abstract):

A machine-learning interatomic potential for Mo–Si alloys based on the atomic cluster expansion formalism is presented, its performance is validated, and it is applied for studying interface phenomena. Structural parameters, elastic constants, and melting temperatures of the crystalline body-centered cubic Mo, diamond Si, and stable Mo–Si alloys (Mo3Si, Mo5Si3, and MoSi2) are calculated and compared to experimental values. Using the trained potential defect, formation energies are calculated and the thermodynamic stability of various MoxSiy alloys is discussed with focus on Mo3Si. Finally, the intermixing between Mo and Si phases is studied by performing interface simulations of Mo|Si. The crystallization behavior of the Mo3Si phase provides additional evidence for the off-stoichiometric composition of this intermetallic phase.

Freie Schlagworte: machine‐learning interatomic potentials, molecular dynamics, Mo–Si alloys, refractory alloys
ID-Nummer: Artikel-ID: 2302043
Zusätzliche Informationen:

TU Projekt: GRK2561 (DFG)

Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Materialmodellierung
Zentrale Einrichtungen
Zentrale Einrichtungen > Hochschulrechenzentrum (HRZ)
Zentrale Einrichtungen > Hochschulrechenzentrum (HRZ) > Hochleistungsrechner
Hinterlegungsdatum: 17 Jul 2024 08:16
Letzte Änderung: 20 Nov 2024 13:02
PPN: 519959485
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