Effect of severe plastic deformation on creep behaviour and microstructure changes of P92 at 923K
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F21%3A00546194" target="_blank" >RIV/68081723:_____/21:00546194 - isvavai.cz</a>
Result on the web
<a href="http://www.elis.sk/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=7297&category_id=176&option=com_virtuemart&vmcchk=1&Itemid=1" target="_blank" >http://www.elis.sk/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=7297&category_id=176&option=com_virtuemart&vmcchk=1&Itemid=1</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4149/km_2021_3_141" target="_blank" >10.4149/km_2021_3_141</a>
Alternative languages
Result language
angličtina
Original language name
Effect of severe plastic deformation on creep behaviour and microstructure changes of P92 at 923K
Original language description
The creep behaviour of P92 steel at 923 K, deformed by rotary swaging (RS) and high-pressure torsion (HPT), was investigated. The RS-processed state contained extremely inhomogeneous microstructure containing large elongated and fine, more or less equiaxed grains. By contrast, the HPT-processed state consists of homogeneous fine-grained microstructure. It was found that both the microstructures coarsen not only with the increasing creep time but also with creep strain. The creep strain significantly accelerates the coarsening of the microstructure, especially in the HPT-processed state. The grain coarsening during creep leads to the change of the creep rate stress exponent n thus to the change of creep mechanism. The value of n depends on the ratio grain versus stationary subgrain size. P92 steel processed by RS and HPT exhibited faster <(epsilon)over dot>(min) and higher ductility compared to coarse-grained (CG) state. However, RS-processed P92 steel can exhibit at high stresses similar creep behaviour as CG state.
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
—
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
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Kovové materiály
ISSN
0023-432X
e-ISSN
1338-4252
Volume of the periodical
59
Issue of the periodical within the volume
3
Country of publishing house
SK - SLOVAKIA
Number of pages
8
Pages from-to
141-148
UT code for WoS article
000667968400001
EID of the result in the Scopus database
2-s2.0-85112697521