Počet záznamů: 1  

Role of deformation twinning in fatigue of CrCoNi medium-entropy alloy at room temperature

  1. 1.
    SYSNO ASEP0542936
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevRole 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 autorů8
    Číslo článku113985
    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. slovaMedium- and high-entropy Alloys ; Deformation twinning ; Fatigue ; Crack initiation ; Crack initiation
    Vědní obor RIVJG - Hutnictví, kovové materiály
    Obor OECDMaterials engineering
    Způsob publikováníOmezený přístup
    Institucionální podporaUFM-A - RVO:68081723
    UT WOS000663221900009
    EID SCOPUS85106349521
    DOI10.1016/j.scriptamat.2021.113985
    AnotaceCylindrical 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.
    PracovištěÚstav fyziky materiálu
    KontaktYvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
    Rok sběru2022
    Elektronická adresahttps://www.sciencedirect.com/science/article/pii/S1359646221002657?via%3Dihub
Počet záznamů: 1