Article Dans Une Revue Journal of Engineering Sciences and Innovation Année : 2022

As-cast microstructures of HEA designed to be strengthened by HfC

Résumé

In this study, two new alloys, resulting of the addition of carbon and hafnium to a well-known high entropy alloy (HEA)the equimolar CoNiFeMnCr oneto promote the formation of HfC carbides, were produced by conventional casting under inert atmosphere and characterized. The as-cast microstructures of the obtained HEA/HfC alloys were studied by X-ray diffraction, electron microscopy, energy dispersion spectrometry, and Vickers indentation. These HEA/HfC alloys are double-phased, with an austenitic matrix and interdendritic eutectic script-like HfC carbides. In terms of chemical composition and of crystallographic network, the matrix of the alloys is identical to the CoNiFeMnCr alloy. In that way, the two alloys can be considered as composite materials resulting of a HEA matrix strengthened by hard HfC particles.

Fichier principal
Vignette du fichier
309 JournalofEngineeringSciencesandInnovation2022p305.pdf (885.31 Ko) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Licence

Dates et versions

hal-03887727 , version 1 (12-12-2022)

Licence

Identifiants

  • HAL Id : hal-03887727 , version 1

Citer

Patrice Berthod. As-cast microstructures of HEA designed to be strengthened by HfC. Journal of Engineering Sciences and Innovation, 2022, 7 (3), pp.305-314. ⟨hal-03887727⟩
86 Consultations
185 Téléchargements

Partager

  • More