Correlation of CB2 steel microstructure before and after long-term creep tests with electrochemical characteristics

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47718684%3A_____%2F12%3A%230000495" target="_blank" >RIV/47718684:_____/12:#0000495 - 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
Correlation of CB2 steel microstructure before and after long-term creep tests with electrochemical characteristics
Original language description
Specimens for long-term creep tests were taken from two different positions in the pilot valve made of cast CB2 steel, which was developed within the COST programmes. Creep testing was carried out at 650°C and a stress range from 50 MPa to 120 MPa. Sometests are still running. Ruptured samples underwent fractographic and microstructural analyses and electrochemical measurements. Quantitative evaluation was performed using extraction carbon replicas and substructure was observed using TEM of thin foils.Microstructure of the virgin material and crept specimens were compared and correlated with electrochemical characteristics measured on the base of the potentiokinetic polarization curves. Precipitation processes taking place during creep exposures resulted in changes of polarization curves. Secondary peak of the current density was detected at a specific potential applied on specimens after creep tests at 650°C. This peak increased with increasing time to rupture and is related to prec
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proc. of the 12th International conference on Creep and Fracture of Engineering Materials and Structures
ISBN
978-4-88903-407-3
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
4
Publisher name
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Place of publication
Kyoto, Japan
Event location
Kyoto, Japan
Event date
May 27, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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