Weld joints of wrought and cast creep resistant steel P91 ? mechanical properties and structural stability

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F09%3A%230000361" target="_blank" >RIV/47718684:_____/09:#0000361 - 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
Weld joints of wrought and cast creep resistant steel P91 ? mechanical properties and structural stability
Original language description
Two trial weld joints of creep resistant 9Cr-1Mo-V steel used for production of steam pipes and cast components of steam power plants were undergone long-term creep testing at a temperature range from 525 °C to 625 °C.Up to 575 °C the creep resistance ofthe both weld joints ranges in recommended 20% scatter band of the creep rupture strength of the base material; at 600 °C and 625 °C it falls below the bottom of this scatter band. A critical region is a fine grain heat affected zone of the base material. Causes of the preferential creep failure in this region are a relatively high density of coarse particles of secondary phases at grain and subgrain boundaries and a low density of fine intragranular precipitate, which is gradually resolved and is replaced with Z-phase particles.
Czech name
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Czech description
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Project
<a href="/en/project/OC09041" target="_blank" >OC09041: Microstructural investigation of welds manufactured from advanced creep resisting materials for steam power plants</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
18th International Conference on Metallurgy and Materials
ISBN
978-80-87294-10-9
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
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Publisher name
Tanger Ltd.
Place of publication
Ostrava
Event location
Hradec nad Moravicí
Event date
Jan 1, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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