Copy the page URI to the clipboard
Burnett, T. L.; Geurts, R.; Jazaeri, H.; Northover, S. M.; McDonald, S. A.; Haigh, S. J.; Bouchard, P. J. and Withers, P. J.
(2015).
DOI: https://doi.org/10.1179/1743284714Y.0000000639
Abstract
A sample of AISI type 316 stainless steel from a power station steam header, showing reheat cracking, was removed from service and has been examined by a combination of microscale X-ray computational tomography, nanoscale serial section focused ion beam–scanning electron microscopy, elemental energy dispersive X-ray mapping and transmission electron microscopy. Multiscale three-dimensional analysis using correlative tomography allowed key regions to be found and analysed with high resolution techniques. The grain boundary analysed was decorated with micrometre sized, facetted cavities, M23C6 carbides, ferrite and G phase but no σ phase. Smaller intragranular M23C6 particles were also observed, close to the grain boundaries. This intimate coexistence suggests that the secondary phases will control the nucleation and growth of the cavities. Current models of cavitation, based on isolated idealised grain boundary cavities, are oversimplified.
Viewing alternatives
Metrics
Public Attention
Altmetrics from AltmetricNumber of Citations
Citations from DimensionsItem Actions
Export
About
- Item ORO ID
- 41462
- Item Type
- Journal Item
- ISSN
- 1743-2847
- Keywords
- stainless steels; creep cavitation; 3D imaging; correlative tomography
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2014 Institute of Materials, Minerals and Mining
- Depositing User
- Hedieh Jazaeri