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The Effect of Predeformation on Creep Strength ofn9% Cr Steel

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00535173" target="_blank" >RIV/68081723:_____/20:00535173 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.mdpi.com/1996-1944/13/23/5330" target="_blank" >https://www.mdpi.com/1996-1944/13/23/5330</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/ma13235330" target="_blank" >10.3390/ma13235330</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    The Effect of Predeformation on Creep Strength ofn9% Cr Steel

  • Original language description

    Martensitic creep-resistant P92 steel was deformed by different methods of severe plasticndeformation such as rotation swaging, high-pressure sliding, and high-pressure torsion at roomntemperature. These methods imposed significantly different equivalent plastic strains of aboutn1–30. It was found that rotation swaging led to formation of heterogeneous microstructures withnelongated grains where low-angle grain boundaries predominated. Other methods led to formationnof ultrafine-grained (UFG) microstructures with high frequency of high-angle grain boundaries.nConstant load tensile creep tests at 873 K and initial stresses in the range of 50 to 300 MPa revealednthat the specimens processed by rotation swaging exhibited one order of magnitude lower minimumncreep rate compared to standard P92 steel. By contrast, UFG P92 steel is significantly softer thannstandard P92 steel, but differences in their strengths decrease with increasing stress. Microstructuralnresults suggest that creep behavior of P92 steel processed by severe plastic deformation is influencednby the frequency of high-angle grain boundaries and grain coarsening during creep.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    <a href="/en/project/GA19-18725S" target="_blank" >GA19-18725S: Influence of microstructure on creep mechanisms in advanced heat resistant steels</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • 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

    1996-1944

  • e-ISSN

  • Volume of the periodical

    13

  • Issue of the periodical within the volume

    23

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    17

  • Pages from-to

    5330

  • UT code for WoS article

    000597473800001

  • EID of the result in the Scopus database

    2-s2.0-85096711098