Počet záznamů: 1
Role of deformation twinning in fatigue of CrCoNi medium-entropy alloy at room temperature
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SYSNO ASEP 0542936 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Role of deformation twinning in fatigue of CrCoNi medium-entropy alloy at room temperature Tvůrce(i) Heczko, Milan (UFM-A) ORCID
Mazánová, Veronika (UFM-A)
Slone, Connor E. (US)
Shih, M. (US)
George, E.P. (US)
Ghazisaedi, M. (US)
Polák, Jaroslav (UFM-A) RID, ORCID
Mills, M. J. (US)Celkový počet autorů 8 Číslo článku 113985 Zdroj.dok. Scripta Materialia. - : Elsevier - ISSN 1359-6462
Roč. 202, SEP (2021)Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Medium- and high-entropy Alloys ; Deformation twinning ; Fatigue ; Crack initiation ; Crack initiation Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering Způsob publikování Omezený přístup Institucionální podpora UFM-A - RVO:68081723 UT WOS 000663221900009 EID SCOPUS 85106349521 DOI 10.1016/j.scriptamat.2021.113985 Anotace Cylindrical specimens of CrCoNi alloy with electropolished surfaces were subjected to constant total strain amplitude low cycle fatigue. The alloy exhibited an initial period of cyclic hardening followed by cyclic softening until failure occurred. At the end of hardening stage at the peak of cyclic stress, well-developed persistent slip markings (PSMs) consisting of extrusions and intrusions were associated with thin deformation twins. A sophisticated experimental workflow was designed to extract information from the surface and the bulk of tested material. A combination of SEM, EBSD, ECCI, FIB and HR-STEM was used to study the internal structure and the surface profiles around the deformation twins, which were produced during the initial period of cyclic loading. Furthermore, localized cyclic plastic strain and stress concentrations near deformation twins led not only to early, well-developed PSMs, but also to the activation of TWIP and TRIP plasticity even at low macroscopic stress amplitudes. 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/S1359646221002657?via%3Dihub
Počet záznamů: 1