Počet záznamů: 1
Surface relief evolution and fatigue crack initiation in René 41 superalloy cycled at room temperature
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SYSNO ASEP 0543078 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Surface relief evolution and fatigue crack initiation in René 41 superalloy cycled at room temperature Tvůrce(i) Babinský, Tomáš (UFM-A) ORCID
Kuběna, Ivo (UFM-A) RID, ORCID
Šulák, Ivo (UFM-A) ORCID
Kruml, Tomáš (UFM-A) RID, ORCID
Tobiáš, Jiří (UFM-A)
Polák, Jaroslav (UFM-A) RID, ORCIDCelkový počet autorů 6 Číslo článku 141520 Zdroj.dok. Materials Science and Engineering A Structural Materials Properties Microstructure and Processing. - : Elsevier - ISSN 0921-5093
Roč. 819, JUL (2021)Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova René 41 superalloy ; Low cycle fatigue ; Surface relief evolution ; Cyclic slip localisation ; Persistent slip bands ; Fatigue crack initiation Vědní obor RIV JL - Únava materiálu a lomová mechanika Obor OECD Audio engineering, reliability analysis CEP EF16_013/0001823 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA18-03615S GA ČR - Grantová agentura ČR LM2015069 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura IPMINFRA - 90069 - Ústav fyziky materiálů AV ČR, v. v. i. Způsob publikování Omezený přístup Institucionální podpora UFM-A - RVO:68081723 UT WOS 000668973600001 EID SCOPUS 85108144990 DOI 10.1016/j.msea.2021.141520 Anotace Surface relief evolution and fatigue crack initiation of René 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. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0921509321007899?via%3Dihub
Počet záznamů: 1