Crack Growth Anomalies in Base Steel P91 and in HAZ
| Periodical | Materials Science Forum (Volume 482) |
|---|---|
| Main Theme | Materials Structure & Micromechanics of Fracture |
| Edited by | Jaroslav Pokluda |
| Pages | 383-386 |
| DOI | 10.4028/www.scientific.net/MSF.482.383 |
| Citation | Jaroslav Balík et al., 2005, Materials Science Forum, 482, 383 |
| Online since | April, 2005 |
| Authors | Jaroslav Balík, Miloš Janeček, Josef Pešička |
| Keywords | Creep Crack Growth, Ductility, Structure Degradation, Weldment |
| Price | US$ 28,- |
The growth of cracks in base steel P91 of 9Cr-1Mo class and in intercritical layer of HAZ is measured under creep coditions. For long term tests, a material degradation was detected consisting in an increase of crack growth rate and in a decrease of crack initiation time. An attempt is made to connect these effects with drop in ductility during thermomechanicalexposition.