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Microstructure and mechanical properties relationship of additively manufactured 316L stainless steel by selective laser melting

This study focuses on 316L stainless steel fabricated by selective laser melting (SLM) in the context of nuclear application, and compares with a cold-rolled solution annealed 316L sample. The effect of heat treatment (HT) and hot isostatic pressing (HIP) on the microstructure and mechanical properties is discussed. | Microstructure and mechanical properties relationship of additively manufactured 316L stainless steel by selective laser melting EPJ Nuclear Sci. Technol. 5 23 2019 Nuclear Sciences A.-H. Puichaud et al. published by EDP Sciences 2019 amp Technologies https doi.org 10.1051 epjn 2019051 Available online at https www.epj-n.org REGULAR ARTICLE Microstructure and mechanical properties relationship of additively manufactured 316L stainless steel by selective laser melting Anne-Helene Puichaud1 Camille Flament1 Aziz Chniouel2 Fernando Lomello2 Elodie Rouesne3 Pierre-François Giroux3 Hicham Maskrot2 Frederic Schuster4 and Jean-Luc Béchade1 1 DEN Service de Recherches en Métallurgie Physique CEA Université Paris-Saclay 91191 Gif-sur-Yvette France 2 DEN Service d Etudes Analytiques et de Réactivité des Surfaces CEA Université Paris-Saclay 91191 Gif-sur-Yvette France 3 DEN Service de Recherches Métallurgiques Appliquées CEA Université Paris-Saclay 91191 Gif-sur-Yvette France 4 Cross-Cutting Skills Program on Materials and Processes CEA Université Paris-Saclay 91191 Gif-sur-Yvette France Received 24 January 2019 Received in final form 24 September 2019 Accepted 23 October 2019 Abstract. Additive manufacturing AM is rapidly expanding in many industrial applications because of the versatile possibilities of fast and complex fabrication of added value products. This manufacturing process would significantly reduce manufacturing time and development cost for nuclear components. However the process leads to materials with complex microstructures and their structural stability for nuclear application is still uncertain. This study focuses on 316L stainless steel fabricated by selective laser melting SLM in the context of nuclear application and compares with a cold-rolled solution annealed 316L sample. The effect of heat treatment HT and hot isostatic pressing HIP on the microstructure and mechanical properties is discussed. It was found that after HT the material microstructure .