Study of Creep Damage in P92 Steel Using Acoustic Emission

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60193247%3A_____%2F24%3AN0000001" target="_blank" >RIV/60193247:_____/24:N0000001 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S2452321623007254" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2452321623007254</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.prostr.2023.12.027" target="_blank" >10.1016/j.prostr.2023.12.027</a>

Result language
angličtina
Original language name
Study of Creep Damage in P92 Steel Using Acoustic Emission
Original language description
For pipeline systems operating for a long time in thermal and/or power plants at high temperature and pressure, the degree of creep degradation is a key factor for their safe operation. The advanced 9% chromium creep-resistant P92 steel is now widely used in modern power plant boiler pipes operated at steam temperatures up to 650°C. In this work, the relationship between creep deformation and damage have been analysed. Constant load tensile creep tests were conducted at 600°C under different applied stresses. The microstructure evolution after creep loading was studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that long-term creep exposition led to coarsening of the size of M23C6 carbides and their precipitation at the grain boundary, which promotes intergranular creep cavitation and thus reduces the creep lifetime of the steel. The acoustic emission (AE) method was applied to monitor the formation and the rate of propagation of cracks arising from creep damage. This nondestructive method is able to detect in advance the degradation processes leading to high temperature component failure. The necessity for nondestructive examination rather than destructive investigation to identify creep damage is emphasized.
Czech name
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Czech description
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Project
<a href="/en/project/TK03020089" target="_blank" >TK03020089: Acoustic Emission Diagnostics of Pipeline Systems Damage designed for Residual Life Estimation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Fracture, Damage and Structural Health Monitoring
ISBN
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ISSN
2452-3216
e-ISSN
2452-3216
Number of pages
8
Pages from-to
259-266
Publisher name
Elsevier B.V.
Place of publication
neuveden
Event location
London
Event date
Sep 12, 2023
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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