Surface relief evolution and fatigue crack initiation in Rene 41 superalloy cycled at room temperature
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F21%3APU146845" target="_blank" >RIV/00216305:26620/21:PU146845 - isvavai.cz</a>
Alternative codes found
RIV/68081723:_____/21:00543078
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0921509321007899?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0921509321007899?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.msea.2021.141520" target="_blank" >10.1016/j.msea.2021.141520</a>
Alternative languages
Result language
angličtina
Original language name
Surface relief evolution and fatigue crack initiation in Rene 41 superalloy cycled at room temperature
Original language description
Surface relief evolution and fatigue crack initiation of Rene 41 superalloy was studied. The material was tested in two thermodynamical states: solutionised and aged. Cylindrical specimens were cycled at total strain amplitude 0.8% at room temperature. In order to study relevant mechanisms resulting in surface relief formation and eventually fatigue crack initiation, cycling was interrupted at definite number of elapsed cycles. After each interruption, the specimen surface was observed by means of scanning electron microscopy and thin lamellae were cut out of the surface and observed by means of transmission electron microscopy. Cyclic deformation was found to localise since the first cycle, causing the formation of persistent slip bands and persistent slip markings in the form of slip steps, extrusions and later intrusions as well. Continuous cycling led to the formation of new persistent slip markings as well as widening of the already existing ones. The role of persistent slip markings in fatigue crack initiation at room temperature was found to be crucial in this superalloy. The results were thoroughly discussed in relation to theoretical models of surface relief formation.
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
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Continuities
S - Specificky vyzkum na vysokych skolach
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
Materials Science and Engineering A
ISSN
0921-5093
e-ISSN
1873-4936
Volume of the periodical
819
Issue of the periodical within the volume
141520
Country of publishing house
CH - SWITZERLAND
Number of pages
14
Pages from-to
„“-„“
UT code for WoS article
000668973600001
EID of the result in the Scopus database
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