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Article Dans Une Revue Materials Année : 2022

Elaboration and Characterization of WMoTaNb High Entropy Alloy Prepared by Powder Metallurgy Processes

Mathias Moser
  • Fonction : Auteur
Loïc Perrière
Rémy Pirès-Brazuna
  • Fonction : Auteur
Hervé Couque
  • Fonction : Auteur
Frédéric Bernard
  • Fonction : Auteur

Résumé

This work concerns the sintering of tungsten-based (i.e WMoTaNb) high entropy alloy (HEA) powders using the spark plasma sintering (SPS) technique and their mechanical properties. The synthesis was performed by a self-propagating high-temperature synthesis (SHS) type reaction in which the mixture of metallic oxides (WO3, MoO3 …) is reduced by magnesium. For this, a specific reactor has been developed. Different conditions including the addition of a moderator were tested. These powders are then densified by SPS technology which allows for keeping the initial microstructure of the powder. The optimization of sintering conditions was performed with the objective to control simultaneously the chemical composition, the grain growth and the densification stages.

Domaines

Matériaux

Dates et versions

hal-03885999 , version 1 (06-12-2022)

Identifiants

Citer

Mathias Moser, Sarah Dine, Dominique Vrel, Loïc Perrière, Rémy Pirès-Brazuna, et al.. Elaboration and Characterization of WMoTaNb High Entropy Alloy Prepared by Powder Metallurgy Processes. Materials, 2022, 15 (15), pp.5416. ⟨10.3390/ma15155416⟩. ⟨hal-03885999⟩
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