Evaluation of Cavitation Damage in a Pipe Bend Made of 0.5Cr-0.5Mo-0.3V Steel by Optical Metallography and Replica Method
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25870807%3A_____%2F20%3AN0000068" target="_blank" >RIV/25870807:_____/20:N0000068 - isvavai.cz</a>
Result on the web
<a href="https://www.scientific.net/DDF.405.300" target="_blank" >https://www.scientific.net/DDF.405.300</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Evaluation of Cavitation Damage in a Pipe Bend Made of 0.5Cr-0.5Mo-0.3V Steel by Optical Metallography and Replica Method
Original language description
Prolongation of the service life of key components of fossil-fuelled power plants beyond their original design limit must be accompanied by thorough and extensive monitoring of the actual material state and particularly creep damage. The extent of cavitation is nowadays routinely tested in-situ by using replica method and its quantification is based on practices stated in VGB-TW 507, NORDTEST NT TR 302 derived from the original Neubauer's classification of cavitation damage. Evaluation of cavitation damage based on the measurement of the number of cavities and/or creep micro-cracks has become a routine activity, but in cases when steel contains large amount of non-metallic inclusions, they can be wrongly identified as cavities and to invalidate the result of calculation of cavitation damage. Comparative analysis of cavitation damage was performed in a pipe bend and its weldment made of a low-alloy 0.5Cr-0.5Mo-0.3V steel creep exposed at 540 °C for more than 225,000 hours by using OM (SEM) and replica method and revealed the comparative extent of cavitation damage decreasing from the outer to inner surface of the pipe wall.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Defect and Diffusion Forum, 405
ISBN
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ISSN
1662-9507
e-ISSN
1012-0386
Number of pages
6
Pages from-to
300-305
Publisher name
Trans Tech Publications Ltd.
Place of publication
Baech (CH)
Event location
Starý Smokovec (SK)
Event date
Apr 24, 2019
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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