Abstract
Samples from the failed section of a flange made of type 321 steel were analyzed. Microchemical analysis by conventional energy dispersive X-ray spectroscopy (EDS) in a scanning electron microscope (SEM) was used for material verification. Both the secondary and backscattered modes of SEM were used to characterize the grain structure. Grain structure was revealed by etching specimens in a nital+chromic acid solution. Microhardness measurements were used to evaluate the mechanical strength. Results emphasize the importance of considering means for preventing partial cracking of isobutane. However if this proved to be impractical, replacement of 321 stainless steel with one of the materials adequately resistant to high-temperature carburization was suggested.
| Original language | English |
|---|---|
| Pages (from-to) | 141-145 |
| Number of pages | 5 |
| Journal | Materials Technology |
| Volume | 20 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2005 |
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering