Laves phase crystal analysis (LaCA): Atomistic identification of lattice defects in C14 and C15 topologically close-packed phases
Xie Z, Chauraud D, Bitzek E, Korte-Kerzel S, Guénolé J (2021)
Publication Type: Journal article
Publication year: 2021
Journal
DOI: 10.1557/s43578-021-00237-y
Abstract
Abstract: The identification of defects in crystal structures is crucial for the analysis of atomistic simulations. Many methods to characterize defects that are based on the classification of local atomic arrangement are available for simple crystalline structures. However, there is currently no method to identify both, the crystal structures and internal defects of topologically close-packed (TCP) phases such as Laves phases. We propose a new method, Laves phase crystal analysis (LaCA), to characterize the atomic arrangement in Laves crystals by interweaving existing structural analysis algorithms. The new method can identify the polytypes C14 and C15 of Laves phases, typical crystallographic defects in these phases, and common deformation mechanisms such as synchroshear and non-basal dislocations. Defects in the C36 Laves phase are detectable through deviations from the periodic arrangement of the C14 and C15 structures that make up this phase. LaCA is robust and extendable to other TCP phases. Graphic abstract: [Figure not available: see fulltext.]
Authors with CRIS profile
Dimitri Chauraud
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Erik Bitzek
Professur für Datenbasierte Materialmodellierung
Additional Organisation(s)
Related research project(s)
Structural and chemical atomic complexity – from defect phase diagrams to material properties;
Project A02 - Atomistic Simulations of Dislocation Processes
Jan. 1, 2020 - Dec. 31, 2023
Atomistic simulations of elementary dislocation processes in coherent and semi-coherent y/y'-microstructures (C03) (SFB/TRR 103)
TRR 103: Vom Atom zur Turbinenschaufel - wissenschaftliche Grundlagen für eine neue Generation einkristalliner Superlegierungen
Jan. 1, 2012 - Dec. 31, 2019
Involved external institutions
Germany (DE)How to cite
APA:
Xie, Z., Chauraud, D., Bitzek, E., Korte-Kerzel, S., & Guénolé, J. (2021). Laves phase crystal analysis (LaCA): Atomistic identification of lattice defects in C14 and C15 topologically close-packed phases. Journal of Materials Research. https://dx.doi.org/10.1557/s43578-021-00237-y
MLA:
Xie, Zhuocheng, et al. "Laves phase crystal analysis (LaCA): Atomistic identification of lattice defects in C14 and C15 topologically close-packed phases." Journal of Materials Research (2021).
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