| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5013518 | Engineering Failure Analysis | 2017 | 23 Pages |
Abstract
A failure analysis investigation was carried out on the secondary Superheater tubes of a boiler unit in a steam power plant. The tubes, made of DIN-16CrMo4 steel, failed by bulging and rupture only after about three years of operation. Metallurgical investigations revealed that microstructural degradation had mainly occurred at the external (fireside) tube surface. Long-term overheating was identified as the root cause of the premature failure.
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Authors
F. Dehnavi, A. Eslami, F. Ashrafizadeh,