Study of the microstructure of the grade 91 steel after more than 100.000h of creep exposure at 600°C - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue International Journal of Pressure Vessels and Piping Année : 2010

Study of the microstructure of the grade 91 steel after more than 100.000h of creep exposure at 600°C

(1, 2) , (3) , (2) , (1) , (1)
1
2
3

Résumé

This paper presents results on the evolution of microstructure (both matrix and precipitates) of an ASME Grade 91 steel that has been creep tested for 113,431 h at 600 °C under a load of 80 MPa. The microstructure was investigated using transmission electron microscopy (TEM) and revealed chromium rich M23C6 carbides, MX-type precipitates, Laves phases and modified Z-phases. Only a small amount of modified Z-phase was found. In order to quantify coarsening of precipitates and growth of new phases during creep, the size distributions of the identified precipitates were determined by analysis of TEM images. In addition to this, the size distribution of Laves phases was determined by image analysis of scanning electron micrographs. Substructure modifications and creep damage were investigated on cross sections of the creep specimen using Electron Backscatter Diffraction and Scanning Electron Microscopy.
Fichier principal
Vignette du fichier
CPanaitIJPVP2010.pdf (1.86 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00509625 , version 1 (13-08-2010)

Identifiants

Citer

Clara Panait, Walter Bendick, A. Fuchsmann, Anne-Françoise Gourgues-Lorenzon, Jacques Besson. Study of the microstructure of the grade 91 steel after more than 100.000h of creep exposure at 600°C. International Journal of Pressure Vessels and Piping, 2010, 87, pp.326-335. ⟨10.1016/j.ijpvp.2010.03.017⟩. ⟨hal-00509625⟩
231 Consultations
3637 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More