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Microstructural and mechanical approaches of the selective laser melting process applied to a nickel-base superalloy

Abstract : This article aims at presenting the Nimonic 263 as-processed microstructure of the selective laser melting which is an innovative process. Because the melting pool is small and the scanning speed of the laser beam is relatively high, the as-processed microstructure is out-of-equilibrium and very typical to additive manufacturing processes. To match the industrial requirement, the microstructures are modified through heat treatments in order to either produce precipitation hardening or relieve the thermal stresses. Tensile tests at room temperature give rise to high mechanical properties close or above those presented by Wang et al. [1]. However, it is noted a strong anisotropy as a function of the building direction of the samples because of the columnar grain growth.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00675998
Contributor : Bibliothèque Umr7633 <>
Submitted on : Friday, March 2, 2012 - 3:43:24 PM
Last modification on : Wednesday, October 14, 2020 - 3:47:43 AM

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Thomas Vilaro, Christophe Colin, Jean-Dominique Bartout, Loic Nazé, Mohamed Sennour. Microstructural and mechanical approaches of the selective laser melting process applied to a nickel-base superalloy. Materials Science and Engineering: A, Elsevier, 2012, 534, pp.446-451. ⟨10.1016/j.msea.2011.11.092⟩. ⟨hal-00675998⟩

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