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Creep Resistance and Microstructure Evolution in P23/P91 Welds

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F25870807%3A_____%2F24%3AN0000033" target="_blank" >RIV/25870807:_____/24:N0000033 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.mdpi.com/1996-1944/18/1/194" target="_blank" >https://www.mdpi.com/1996-1944/18/1/194</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/ma18010194" target="_blank" >10.3390/ma18010194</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Creep Resistance and Microstructure Evolution in P23/P91 Welds

  • Original language description

    Popisem výsledku je souhrn, anotace nebo abstrakt, ze kterého je patrné, co výsledek řeší, nebo čeho bylo dosaženo, resp. co je pro výsledek charakteristické. Obsah popisu je důležitý, zejména u výsledku aplikovaného výzkumu v případě, že výsledek bude vstupovat do hodnocení. U výsledku druhu (patent)předkladatel uvede každoročně do anotace údaje o užití patentu (ne/uplatnění patentu, prodané licenci apod.), které jsou předmětem meziročních kontrol. Po pěti letech je patent automaticky evidován jako neuplatněný, nebude-li předkladatelem doloženo jinak. Popis výsledku vkládejte jako souvislý text bez odstavců. This paper summarizes the results of investigations into heterogeneous P23/P91 welds after long-term creep exposure at temperatures of 500, 550 and 600 ◦C. Two variants of welds were studied: In Weld A, the filler material corresponded to P91 steel, while in Weld B, the chemical composition of the consumable material matched P23 steel. The creep rupture strength values of Weld A exceeded those of Weld B at all testing temperatures. Most failures in the cross-weld samples occurred in the partially decarburized zones of P23 or WM23 steel. The results of the investigations on the minor phases were in good agreement with kinetic simulations that considered a 0.1 mm fusion zone. Microstructural studies proved that carburization occurred in the P23/P91 weld fusion zones. The partial decarburization of P23 steel or WM23 was accompanied by the dissolution of M7C3 and M23C6 particles, and detailed studies revealed the precipitation of the Fe2(W, Mo) Laves phase in decarburized areas. Thermodynamic simulations proved that the appearance of this phase in partially decarburized P23 steel or WM23 is related to a reduction in the carbon content in these areas. According to the results of creep tests, the EBSD investigations revealed a better microstructural stability of the partially decarburized P23 steel in Weld A.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2024

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Materials

  • ISSN

  • e-ISSN

    1996-1944

  • Volume of the periodical

    18

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    23

  • Pages from-to

  • UT code for WoS article

    001393680100001

  • EID of the result in the Scopus database

    2-s2.0-85214517512