Advanced atomistic models for radiation damage in Fe-based alloys: Contributions and future perspectives from artificial neural networksVise andre og tillknytning
2018 (engelsk)Inngår i: Computational materials science, ISSN 0927-0256, E-ISSN 1879-0801, Vol. 148, s. 116-130Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
Machine learning, and more specifically artificial neural networks (ANN), are powerful and flexible numerical tools that can lead to significant improvements in many materials modelling techniques. This paper provides a review of the efforts made so far to describe the effects of irradiation in Fe-based and W-based alloys, in a multiscale modelling framework. ANN were successfully used as innovative parametrization tools in these models, thereby greatly enhancing their physical accuracy and capability to accomplish increasingly challenging goals. In the provided examples, the main goal of ANN is to predict how the chemical complexity of local atomic configurations, and/or specific strain fields, influence the activation energy of selected thermally-activated events. This is most often a more efficient approach with respect to previous computationally heavy methods. In a future perspective, similar schemes can be potentially used to calculate other quantities than activation energies. They can thus transfer atomic-scale properties to higher-scale simulations, providing a proper bridging across scales, and hence contributing to the achievement of accurate and reliable multiscale models.
sted, utgiver, år, opplag, sider
Elsevier, 2018. Vol. 148, s. 116-130
Emneord [en]
Artificial neural networks, Kinetic Monte Carlo, Irradiation damage, Multiscale modelling
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-226734DOI: 10.1016/j.commatsci.2018.02.025ISI: 000428907600013Scopus ID: 2-s2.0-85042355717OAI: oai:DiVA.org:kth-226734DiVA, id: diva2:1203316
Forskningsfinansiär
EU, Horizon 2020, 755039, 661913
Merknad
QC 20180503
2018-05-032018-05-032018-05-03bibliografisk kontrollert