Microstructural study of β treated grade 702 zirconium. Scanning electron microscopy and transmission electron microscopy, complementarity of two observational scales - Archive ouverte HAL
Article Dans Une Revue Journal of Materials Science Année : 1997

Microstructural study of β treated grade 702 zirconium. Scanning electron microscopy and transmission electron microscopy, complementarity of two observational scales

Jérôme Crépin
Daniel Caldemaison
  • Fonction : Auteur
  • PersonId : 839179
Alain Barbu
  • Fonction : Auteur
  • PersonId : 1084885
Gérard Jazkierowitcz
  • Fonction : Auteur

Résumé

In this study we focus on the precipitation of betagenic elements (Fe, Cr, Ni) that occurs during the β→α allotropic transition in zirconium. In particular its structural characteristics, morphology and their consequences for the mechanical behaviour of the material are probed. The observations are made by means of a scanning electron microscope and a transmission electron microscope. The results reveal the occurrence of a quasi-continuous single crystalline phase, produced by the precipitation of the betagenic additional elements which constitute the so-called lath boundaries. This phase forms a layer surrounding the laths in the bulk of the material. Its morphology could be assimilated to a net, created by precipitates with a size of several micrometres and linked by narrow bridges with a size of several hundred nanometres. The chemical composition of the precipitates are of the Zrx(Cr,Fe2)1-x type with x≤40%.

Domaines

Matériaux
Fichier principal
Vignette du fichier
Crepin1997.pdf (463.76 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00111571 , version 1 (01-11-2022)

Licence

Identifiants

Citer

Jérôme Crépin, Thierry Bretheau, Daniel Caldemaison, Alain Barbu, Gérard Jazkierowitcz. Microstructural study of β treated grade 702 zirconium. Scanning electron microscopy and transmission electron microscopy, complementarity of two observational scales. Journal of Materials Science, 1997, 32 (18), pp.4841-4846. ⟨10.1023/A:1018603619366⟩. ⟨hal-00111571⟩
104 Consultations
23 Téléchargements

Altmetric

Partager

More