Creep properties and microstructure evoluation of weld joint of the pipe made of P92 steel

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F10%3A%230000433" target="_blank" >RIV/47718684:_____/10:#0000433 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Creep properties and microstructure evoluation of weld joint of the pipe made of P92 steel
Original language description
One-side weld joint of W type was prepared from P92 type steel using GTAW & SMAW method. Creep test to the rupture of smooth cross-weld samples has been carried out at temperatures ranging from 575 to 650 °C and at stresses from 70 to 240 MPa. Fractographic analysis, hardness measurement and detailed study of submicrostructure have been performed using light, scanning and transmission electron microscopy. Changes of microstructure were correlated with the creep strength. Increase in size of secondary phases and cavities formation were evident after creep tests at temperatures above 575°C. Voids were concentrated in the fine prior austenite grain heat affected zones, where fracture occurred. In addition, a sporadic occurrence of individual cavities wasfound out in the base material and the weld metal after tests at 625 and 650 °C. During creep exposures at temperatures above 600 °C Laves phase precipitated.
Czech name
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Czech description
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Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proc. of the 9th Liege conference Materials for advanced power engineering 2010
ISBN
978-3-89336-685-9
ISSN
1866-1793
e-ISSN
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Number of pages
10
Pages from-to
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Publisher name
Forschung Zentrum Julich GmbH
Place of publication
Liege
Event location
Liege
Event date
Jan 1, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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