Effects of Grain Refinement and Predeformation Impact by Severe Plastic Deformation on Creep in P92 Martensitic Steel
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F20%3A00511810" target="_blank" >RIV/68081723:_____/20:00511810 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/pdf/10.1002/adem.201900448" target="_blank" >https://onlinelibrary.wiley.com/doi/pdf/10.1002/adem.201900448</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adem.201900448" target="_blank" >10.1002/adem.201900448</a>
Alternative languages
Result language
angličtina
Original language name
Effects of Grain Refinement and Predeformation Impact by Severe Plastic Deformation on Creep in P92 Martensitic Steel
Original language description
Creep testing is conducted on an advanced martensitic-ferritic creep-resistant P92 steel (ASME Grade 92) to evaluate the effects of grain refinement and the predeformation impact after processing by severe plastic deformation (SPD), namely, by high-pressure torsion and high-pressure sliding. Constant-load tensile creep tests are carried out in an argon atmosphere at 600 degrees C and under an applied stress ranging from 50 to 200 MPa. The results show that under the same creep loading conditions, the ultrafine-grained (UFG) microstructure states after SPD processing exhibit higher minimum creep rate epsilon(m) and creep fracture plasticity epsilon f, but significantly shorter creep lives in comparison with the coarse-grained (as-received) state of the steel. These distinct differences between the coarse-grained and UFG states are explained by the different deformation mechanisms that operate, creep behavior in a coarse-grained state is controlled by the intragranular climb of dislocations, while creep in UFG states can be interpreted as the synergistic action of the dynamic recovery of free dislocations at high-angle grain boundaries and grain boundary-mediated deformation processes.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
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
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Advanced Engineering Materials
ISSN
1438-1656
e-ISSN
1527-2648
Volume of the periodical
22
Issue of the periodical within the volume
1
Country of publishing house
DE - GERMANY
Number of pages
9
Pages from-to
1900448
UT code for WoS article
000481521000001
EID of the result in the Scopus database
2-s2.0-85070770158