Simulation and analysis of small angle scattering (SAS) patterns of Ni-based superalloy microstructures generated by a phase-field model

Berbenni, Stéphane [Universite de Lorraine, Metz (France); Centre National de la Recherche Scientifique (CNRS), Metz (France); Arts et Métiers ParisTech, Metz (France). Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux (LEM3)] (ORCID:0000000211149316); Dingreville, Rémi Philippe Michel [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies] (ORCID:000000031613695X); Schenk, Thomas [Universite de Lorraine, Metz (France). Laboratory of Excellence on Design of Alloy Metals for low-mAss Structures (LabEx DAMAS); Universite de Lorraine, Nancy (France); Centre National de la Recherche Scientifique (CNRS), Nancy (France). Institut Jean Lamour (IJL)] (ORCID:0000000345027488)

doi:10.1016/j.commatsci.2025.114086

DOE OSTI · 2583711

Simulation and analysis of small angle scattering (SAS) patterns of Ni-based superalloy microstructures generated by a phase-field model

Berbenni, Stéphane [Universite de Lorraine, Metz (France); Centre National de la Recherche Scientifique (CNRS), Metz (France); Arts et Métiers ParisTech, Metz (France). Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux (LEM3)] (ORCID:0000000211149316)·Dingreville, Rémi Philippe Michel [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies] (ORCID:000000031613695X)·Schenk, Thomas [Universite de Lorraine, Metz (France). Laboratory of Excellence on Design of Alloy Metals for low-mAss Structures (LabEx DAMAS); Universite de Lorraine, Nancy (France); Centre National de la Recherche Scientifique (CNRS), Nancy (France). Institut Jean Lamour (IJL)] (ORCID:0000000345027488)

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Abstract

This paper investigates the relationship between microstructural features and small-angle scattering (SAS) patterns in Ni-based superalloys using a combined phase-field and SAS simulation approach coupled with microstructure analyses. The simulated SAS patterns accurately capture key experimental observations previously reported in the literature, including the time-dependent transition from circular to square-shaped precipitates and the development of anisotropic SAS patterns. Importantly, our analysis reveals the correlations between characteristic length scales extracted from SAS profiles and microstructural descriptors, such as precipitate size and inter-precipitate distance. These findings provide a comprehensive understanding of the link between SAS profiles and microstructure evolution in Ni-based superalloys, offering valuable insights for materials characterization and design.

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Microstructure Patterns Phase-field Simulations Small angle scattering

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Berbenni, Stéphane [Universite de Lorraine, Metz (France); Centre National de la Recherche Scientifique (CNRS), Metz (France); Arts et Métiers ParisTech, Metz (France). Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux (LEM3)] (ORCID:0000000211149316), Dingreville, Rémi Philippe Michel [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies] (ORCID:000000031613695X), Schenk, Thomas [Universite de Lorraine, Metz (France). Laboratory of Excellence on Design of Alloy Metals for low-mAss Structures (LabEx DAMAS); Universite de Lorraine, Nancy (France); Centre National de la Recherche Scientifique (CNRS), Nancy (France). Institut Jean Lamour (IJL)] (ORCID:0000000345027488). 2025-07-19. Simulation and analysis of small angle scattering (SAS) patterns of Ni-based superalloy microstructures generated by a phase-field model. https://doi.org/10.1016/j.commatsci.2025.114086

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