%0 Journal Article
%A Garrivier, Natan
%A Van Petegem, Steven
%A Pouchon, Manuel
%A Strobl, Markus
%A Tosoratti, Enrico
%A Cretton, Adam
%A Falch, Ken Vidar
%A Ferreira Sanchez, Dario
%A Makowska, Malgorzata Grazyna
%T Multimodal synchrotron characterization of the formation and spatial distribution of retained austenite in PBF-LB/M-manufactured ferritic–martensitic steel
%J Additive manufacturing
%V 115
%@ 2214-7810
%C Amsterdam [u.a.]
%I Elsevier
%M PUBDB-2026-00686
%P 105055 
%D 2026
%X Metal additive manufacturing is a promising route for producing complex, highly customized embeddedstructures for nuclear fusion environments, such as breeding blankets and divertors. These applicationsrequire steels with high thermomechanical stability and resistance to irradiation, yet AM processing oftenleads to undesired microstructural heterogeneities, including the formation of metastable phases. In thiswork, we investigate the formation and spatial distribution of retained austenite in Laser Powder BedFusion (PBF-LB/M) — processed ferritic–martensitic stainless steel (AISI 415) using multimodal synchrotron-based characterization. Micron-resolution 2D and 3D synchrotron X-ray Diffraction and X-ray Fluorescencemapping, combined with operando XRD during PBF-LB/M, reveal the presence of retained 𝛾-phase in periodicmesostructures at concentrations up to 0.5 wt
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1016/j.addma.2025.105055
%U https://bib-pubdb1.desy.de/record/645914