The effect of σ-phase formation on long-term durability of welding joints in SUPER 304H steels
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00467327" target="_blank" >RIV/68081723:_____/16:00467327 - isvavai.cz</a>
Alternative codes found
RIV/60193247:_____/16:N0000016
Result on the web
<a href="http://dx.doi.org/10.12693/APhysPolA.130.960" target="_blank" >http://dx.doi.org/10.12693/APhysPolA.130.960</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.12693/APhysPolA.130.960" target="_blank" >10.12693/APhysPolA.130.960</a>
Alternative languages
Result language
angličtina
Original language name
The effect of σ-phase formation on long-term durability of welding joints in SUPER 304H steels
Original language description
Article presents results on the analysis of secondary phases formed in the medium-term static isothermal ageing welding joints of a SUPER 304H (675°C/2 104 h). The investigations of the precipitates were focused on the occurrence of σ-phase because its formation leads to significant deterioration of mechanical properties. The microstructure was investigated on microscopic level by scanning/transmission electron microscopy. The distribution and quantification of brittle σ-phase were studied on macroscopic level by color etching method using light optical microscopy. The effect of microstructural changes (σ-phase formation) on the impact strength of an aged base material was investigated. For comparison impact tests on received state material were also performed. The results showed that long-term ageing led to the significant reduction of impact strength as a result of the formation of the σ-phase. It was found that the σ-phase distribution is influenced by welding process. The influence of brittle σ-phase on long-term durability of the degraded steel regarding its insufficient impact strength has been discussed.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Acta Physica Polonica A, Vol. 130, č. 4
ISBN
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ISSN
0587-4246
e-ISSN
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Number of pages
3
Pages from-to
960-962
Publisher name
Polish Academy of Sciences Publishing House
Place of publication
Warszawa
Event location
Krynica Zdrój
Event date
Sep 20, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000388580800041