Diagnostics of the Structural-Mechanical State of Steels of Steam Pipelines by the Coercimetric Method and Prediction of Their Service Life.
In: Materials Science, Jg. 49 (2014-03-01), Heft 5, S. 667-680
Online
academicJournal
Zugriff:
We investigate the chemical and phase compositions, structural morphology, and physicomechanical properties of 12Kh1MF and 15Kh1M1F steels from the bends of steam pipelines of thermal power plants after operation for 175 - 280 ⋅ 10 h. The possibility of diagnostics of the structural-mechanical states of the steels of steam pipelines after long-term operation is experimentally justified by measuring their coercive force H. We propose a method aimed at the prediction of the residual service life on the basis of the dependences of H on the operating time and the number of startups and shutdowns of the steam pipelines of TPP. We state that it is necessary to form a new database of correlation dependences of the properties of heat-resistant steels degraded in the process of operation on their structural-phase state and microscopic defects because the dependences known for these steels in the initial (as-delivered) state are inapplicable for the proposed diagnostics. [ABSTRACT FROM AUTHOR]
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Titel: |
Diagnostics of the Structural-Mechanical State of Steels of Steam Pipelines by the Coercimetric Method and Prediction of Their Service Life.
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Autor/in / Beteiligte Person: | Ostash, O. ; Vol'demarov, O. ; Hladysh, P. |
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Zeitschrift: | Materials Science, Jg. 49 (2014-03-01), Heft 5, S. 667-680 |
Veröffentlichung: | 2014 |
Medientyp: | academicJournal |
ISSN: | 1068-820X (print) |
DOI: | 10.1007/s11003-014-9661-3 |
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