Spark plasma sintering of ultrafine grained aisi 316L and functional properties characterization

Clément Keller; G. Marnier; K. Tabalaiev; E. Hug; L.G. de la Cruz; J. Noudem

Spark plasma sintering of ultrafine grained aisi 316L and functional properties characterization

Clément Keller ¹ G. Marnier ¹ K. Tabalaiev ² E. Hug ³ L.G. de la Cruz ^{4, 3} J. Noudem ³

1 GPM - Groupe de physique des matériaux

2 CNRS - Centre National de la Recherche Scientifique

3 CRISMAT - Laboratoire de cristallographie et sciences des matériaux

4 ENSICAEN - École Nationale Supérieure d'Ingénieurs de Caen

Abstract : In this work, the spark plasma sintering (SPS) of stainless steel 316L with ultrafine grains was investigated. Ball-milled 316L powder was employed and the process parameters (time, temperature, pressure) were varied over wide ranges to analyze their effect on the microstructure and density of sintered specimens. Using suitable sets of parameters, samples with large densities and homogeneous grain sizes ranging between 400 nm and 3 μm have been successfully obtained. The mechanical properties (hardness and tensile resistance) coupled with corrosion resistance behavior have been then studied as a function of the grain size. The sintered specimens present a strong increase in tensile resistance together with a strong decrease in ductility due to the grain size refinement. The corrosion resistance seems not to be affected by the non-equilibrium sintering process.

Keywords : Tensile resistance Ultra-fine-grained Stainless steel 316L Sintering process Characterization Corrosion Corrosion resistance Grain refinement Grain size and shape Metallurgy Powder metallurgy Spark plasma sintering Stainless steel Functional properties Grain size refinement Homogeneous grain sizes Process parameters Sintering

Type de document :

Communication dans un congrès

Domaine :

Chimie

Chimie / Cristallographie

Chimie / Matériaux

Chimie / Chimie théorique et/ou physique

Liste complète des métadonnées

https://hal-normandie-univ.archives-ouvertes.fr/hal-02184191
Contributeur : Elisabeth van T Hof <>
Soumis le : lundi 15 juillet 2019 - 18:07:19
Dernière modification le : mardi 16 juillet 2019 - 12:44:16

Spark plasma sintering of ultrafine grained aisi 316L and functional properties characterization

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Spark plasma sintering of ultrafine grained aisi 316L and functional properties characterization

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