Počet záznamů: 1

The hyperbolic sine relation and dip test data in constant strain rate compression experiments

  1. 1.
    0353874 - UFM-A 2011 RIV GB eng J - Článek v odborném periodiku
    Kruml, Tomáš - Coddet, O. - Martin, J. L.
    The hyperbolic sine relation and dip test data in constant strain rate compression experiments.
    Journal of Physics: Conference Series. Roč. 240, - (2010), 012028 ISSN 1742-6588.
    [ICSMA-15 (15th International Conference on the Strength of Materials). Dresden, 16.08.2009-21.08.2009]
    Výzkumný záměr: CEZ:AV0Z20410507
    Klíčová slova: dip test * effective stress * compression
    Kód oboru RIV: JJ - Ostatní materiály

    Single crystals of Ni3Al, intrinsic Ge, Cu, Cu with 5at%Al and 7.5at%Al are submitted to constant strain rate compression tests and stress reduction experiments. Curves of the initial creep rate as a function of the amount of stress reduction are analysed in terms of a hyperbolic sine relation based on the thermal activation of the dislocation velocity. It is shown that this relation satisfactorily fits the curves of the two first crystals. However, this is not observed for the three last ones. Reasons for this behaviour are proposed as well as a method for the effective stress evaluation.
    Trvalý link: http://hdl.handle.net/11104/0192998