Abstract
The mechanical and thermal fatigue of austenitic stainless steels was examined for the maximum temperature range expected in coextruded floor tubes of recovery boilers to determine the likelihood that the cracking in the 304L stainless steel cladding could be fatigue related. The microstructures and cracking patterns of fatigue-tested specimens were compared to features observed in cracked cladding and significant differences were found which suggested that fatigue was not the most likely cause for failure. Biaxial thermal fatigue testing of coextruded tubes and panels was performed to gather more evidence of cracking patterns. Here, transient thermal stresses were imposed by rapidly heating the tubing surface with lamps. In spite of high surface temperatures, no cracks were produced in the 304L stainless steel cladding, and this observation was interpreted as evidence that cracking must be corrosion related.
| Original language | English |
|---|---|
| Pages | 209-212 |
| Number of pages | 4 |
| State | Published - 1998 |
| Event | Proceedings of the 1998 9th International Symposium on Corrosion in the Pulp and Paper Industry - Ottawa, Can Duration: May 26 1998 → May 29 1998 |
Conference
| Conference | Proceedings of the 1998 9th International Symposium on Corrosion in the Pulp and Paper Industry |
|---|---|
| City | Ottawa, Can |
| Period | 05/26/98 → 05/29/98 |