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Twinning processes in Cu-Al-Ni martensite single crystals investigated by neutron single crystal diffraction method

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    SYSNO ASEP0312558
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevTwinning processes in Cu-Al-Ni martensite single crystals investigated by neutron single crystal diffraction method
    Tvůrce(i) Molnar, P. (CZ)
    Šittner, P. (CZ)
    Novák, V. (CZ)
    Lukáš, Petr (UJF-V) RID
    Zdroj.dok.Materials Science and Engineering A-Structural materials. - : Elsevier - ISSN 0921-5093
    Roč. 481, Sp.Iss.SI (2008), s. 513-517
    Poč.str.5 s.
    Jazyk dok.eng - angličtina
    Země vyd.CH - Švýcarsko
    Klíč. slovaCu-Al-Ni ; single crystals ; neutron diffraction
    Vědní obor RIVBG - Jaderná, atomová a mol. fyzika, urychlovače
    CEPIAA100480704 GA AV ČR - Akademie věd
    CEZAV0Z10480505 - UJF-V (2005-2011)
    UT WOS000255716100106
    DOI10.1016/j.msea.2007.01.189
    AnotaceA neutron single crystal diffraction method for inspecting the quality of martensite single crystals is introduced. True interface-free martensite single crystals are indispensable for, e.g. measurement of elastic constants of phases by ultrasonic techniques. The neutron diffraction method was used to detect and distinguish the presence of individual lattice correspondence variants of the 2H orthorhombic martensite phase in Cu-Al-Ni as well as to follow the activity of twinning processes during the deformation test on the martensite variant single crystals. When preparing the martensite single variant prism-shaped crystals by compression deformation method, typically a small fraction of second unwanted martensitic variant (compound twin) remains in the prism samples. Due to the very low stress (similar to 1 MPa) for the compound twinning in many shape memory alloys, it is quite difficult not only to deplete the martensite prisms of all internal interfaces but mainly to keep them in the martensite single variant state for a long time needed for further investigations.
    PracovištěÚstav jaderné fyziky
    KontaktMarkéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 ; Renata Glasová, glasova@ujf.cas.cz, Tel.: 266 177 223
    Rok sběru2013
Počet záznamů: 1