Evaluation of mechanical properties and microstructure of dissimilar weld joint of COST F and FB2 steels after long term creep test

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F13%3A%230000553" target="_blank" >RIV/47718684:_____/13:#0000553 - isvavai.cz</a>
Result on the web
<a href="http://www.vtt.fi/publications/index.jsp" target="_blank" >http://www.vtt.fi/publications/index.jsp</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Evaluation of mechanical properties and microstructure of dissimilar weld joint of COST F and FB2 steels after long term creep test
Original language description
Trial dissimilar weld joint was prepared from COST F and COST FB2 type steels using TIG HOT-WIRE method in conditions used in industrial praxis for production welded steam turbine rotor. Long-term creep tests to the rupture of smooth crossweld samples have been carried out at temperatures ranging from 550 to 650°C and at stresses from 70 to 220 MPa. Fractographic analysis, hardness profile measurement and study of submicrostructure using light, scanning and transmission electron microscopy have been performed. Creep strength of weld joint falls into ?20% scatter band of the creep strength of the base material COST F up to 600°C. Different types of cracking were observed in dependency on conditions of creep test: fractures were located in the base material of steel COST F at lower temperatures and higher stresses and in the fine prior austenite grained or intercritically reheated part of heat affected zone of steel COST F where cavitation failure was evident.
Czech name
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Czech description
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Project
<a href="/en/project/FR-TI2%2F080" target="_blank" >FR-TI2/080: New Technologies of Joining of Flow Turbine Components for Ultra Super Critical Parameters of Steam</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of International Conference on Life Management and Maintenance for Power Plants Baltica IX, Edited by Pertti Auerkari & Juha Veivo
ISBN
978-951-38-8025-5
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
630-639
Publisher name
VTT TECHNOLOGY 106
Place of publication
Helsinky
Event location
Helsinky - Stockholm
Event date
Jun 11, 2013
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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