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Mechanical properties of zinc-aluminium alloys extruded in the liquid-solid state

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1007/BF00547473
AuteurRechercher : 1
Affiliation
  1. Conseil national de recherches Canada
FormatTexte, Article
Sujetmicrostructure; flow stress; deformation behaviour; solid fraction; dense material
Résumé
Zinc-aluminium alloy bars and wires were successfully extruded in the liquid-solid state with a liquid fraction higher than 15%. Fully dense materials were obtained in this way with pressure lower than 100 MPa. The relationship between flow stress and solid fraction was obtained and the role of the liquid component in the deformation behaviour was clarified. Mechanical properties of the extruded material are presented and discussed with regard to the initial microstructure of the metals before deformation, i.e. the conventional dendritic structure and non-dendritic structure composed of solid spheroids dispersed in the remaining liquid obtained by stir-casting techniques. The microstructure of the extruded products was generally fine and a fibrous structure was easily observed particularly for the stir-cast material where primary solid spheroids were highly deformed. Optimization of these parameters leads to a desirable high-strength material.
Date de publication
Maison d’éditionSpringer
Dans
  • Journal of Materials Science 23, nº 8 : 2943–2950.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCCNRC 26669
NRC-IGM86-205-446
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Identificateur de l’enregistrementfba9e917-f8c7-4fba-90ff-573f152c03a5
Enregistrement créé2019-11-23
Enregistrement modifié2020-03-17
Date de modification :