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Development of an austenitic/martensitic gradient steel by additive manufacturing

Abstract : In many applications, additive manufacturing techniques are rising to build, layerby-layer,component with complex shapes and specific microstructures. DirectMetal Deposit (DMD) process allows to tune the material's composition usingdifferent powder feeder. In this study, we focused on a gradient from a 316Laustenitic stainless steel to a 9Cr-1Mo martensitic steel. These steels are widelyused for nuclear applications, but due to their chemical composition differences,welding them is uneasy. In this study, microstructures obtained by Tungsten InertGas welding are compared with graded parts obtained by powder metallurgy, afterSpark Plasma Sintering or additive manufacturing with Direct Metal Depositprocess.
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Submitted on : Wednesday, November 27, 2019 - 1:42:38 PM
Last modification on : Wednesday, July 8, 2020 - 12:43:31 PM

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  • HAL Id : cea-02339473, version 1

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F. Villaret, X. Boulnat, P. Aubry, D. Fabregue, Y. de Carlan. Development of an austenitic/martensitic gradient steel by additive manufacturing. International Congress on Advances in Nuclear Power Plants (ICAPP - 2019), May 2019, Juan-Les-Pins, France. pp.1868 - 1879. ⟨cea-02339473⟩

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