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Importance of γ′shearing in low-cycle fatigue of a wrought superalloy
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SYSNO ASEP 0584746 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Importance of γ′shearing in low-cycle fatigue of a wrought superalloy Tvůrce(i) Babinský, Tomáš (UFM-A) ORCID
Poczklán, Ladislav (UFM-A) ORCID
Gálíková, Markéta (UFM-A)
Polák, Jaroslav (UFM-A) RID, ORCIDCelkový počet autorů 4 Zdroj.dok. Fatigue and Fracture of Engineering Materials and Structures - ISSN 8756-758X
Roč. 47, č. 6 (2024), s. 1927-1943Poč.str. 17 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova high-temperature ; hysteresis loop ; room-temperature ; behavior ; mechanisms ; damage ; oxidation ; fracture ; steel ; cyclic plasticity ; gamma prime shearing ; low-cycle fatigue ; persistent slip band ; Rene 41 Způsob publikování Omezený přístup Institucionální podpora UFM-A - RVO:68081723 UT WOS 001185070200001 EID SCOPUS 85188230471 DOI 10.1111/ffe.14272 Anotace The present study deals with the fatigue behavior of a wrought nickel-based superalloy Rene 41. Uniaxial, fully reversed low-cycle fatigue tests were conducted at room and elevated (800 degrees C) temperatures under total strain control. Cyclic response was analyzed using the statistical theory of the hysteresis loop, and scanning and transmission electron microscopies were employed to study relevant damage mechanisms. At room temperature, cyclic deformation was found to localize to slip bands since the first cycle, and most slip bands were formed very early in the fatigue life. Hence, shearing of the strengthening phase, coherent gamma ' precipitates, was found to be significant only in the first few cycles. At 800(degrees)C, fatigue life was affected by an environmental attack resulting in a surface oxide layer. Cyclic deformation was less localized, nevertheless, cyclic slip localization in persistent slip bands and resulting gamma ' shearing contributed to cyclic softening throughout the fatigue life. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2025 Elektronická adresa https://onlinelibrary.wiley.com/doi/10.1111/ffe.14272
Počet záznamů: 1