Uncertainty Quantification in Atomistic Modeling of Metals and its Effect on Mesoscale and Continuum Modeling A Review

The design of next-generation alloys through the Integrated Computational Materials Engineering (ICME) approach relies on multi-scale computer simulations to provide thermodynamic properties when experiments are difficult to conduct. Atomistic methods such as Density Functional Theory (DFT) and Mole...

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Bibliographic Details
Published in:arXiv.org 2020-09
Main Authors: Gabriel, Joshua J, Paulson, Noah H, Duong, Thien C, Tavazza, Francesca, Becker, Chandler A, Chaudhuri, Santanu, Stan, Marius
Format: Article
Language:English
Subjects:
Aluminum
Bayesian analysis
Computer simulation
Continuum modeling
Density functional theory
Materials engineering
Mesoscale phenomena
Molecular dynamics
Phase diagrams
Thermodynamic models
Thermodynamic properties
Uncertainty
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Summary:The design of next-generation alloys through the Integrated Computational Materials Engineering (ICME) approach relies on multi-scale computer simulations to provide thermodynamic properties when experiments are difficult to conduct. Atomistic methods such as Density Functional Theory (DFT) and Molecular Dynamics (MD) have been successful in predicting properties of never before studied compounds or phases. However, uncertainty quantification (UQ) of DFT and MD results is rarely reported due to computational and UQ methodology challenges. Over the past decade, studies have emerged that mitigate this gap. These advances are reviewed in the context of thermodynamic modeling and information exchange with mesoscale methods such as Phase Field Method (PFM) and Calculation of Phase Diagrams (CALPHAD). The importance of UQ is illustrated using properties of metals, with aluminum as an example, and highlighting deterministic, frequentist and Bayesian methodologies. Challenges facing routine uncertainty quantification and an outlook on addressing them are also presented.
ISSN:2331-8422