| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1634777 | Procedia Materials Science | 2014 | 5 Pages |
Abstract
Corrosion fatigue small crack growth rates have been determined for a 12Cr steam turbine steel in a simulated condensate solution under conditions representing repetitive turbine start-up and shut-down. Cracks were grown from a single corrosion pit generated electrochemically using the droplet technique and the crack length monitored optically and by direct current potential drop (DCPD). A comparison is made with growth rates for short and long cracks determined using fracture mechanics specimens. The enhanced crack growth rate observed for a short crack (relative to that for a long crack) but not realised for the small crack is rationalized on the basis of an electrochemical crack size effect.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
A. Turnbull, S. Zhou, M. Lukaszewicz,