Počet záznamů: 1

In situ observation of morphological changes of gamma ' precipitates in a pre-deformed single-crystal Ni-base superalloy

  1. 1.
    0367053 - UJF-V 2012 RIV GB eng J - Článek v odborném periodiku
    Strunz, Pavel - Schumacher, G. - Klingenhoffer, H. - Wiedenmann, A. - Šaroun, Jan - Keiderling, U.
    In situ observation of morphological changes of gamma ' precipitates in a pre-deformed single-crystal Ni-base superalloy.
    Journal of Applied Crystallography. Roč. 44, č. 5 (2011), s. 935-944 ISSN 0021-8898
    Grant CEP: GA ČR(CZ) GAP204/11/1453
    Výzkumný záměr: CEZ:AV0Z10480505
    Klíčová slova: ANGLE NEUTRON-SCATTERING * SANS * TEMPERATURE
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 5.152, rok: 2011

    Exposure of a superalloy to an external load results in anisotropic coarsening of the gamma' precipitates, so-called rafting. It was reported in the past that gamma' rafting can also occur as a result of purely thermal treatment, without the simultaneous presence of an external load, if the specimen has been pre-deformed at relatively low temperature. The evolution of gamma' morphology in pre-deformed specimens of SCA425 Ni-base superalloy was examined in the present study. Unlike in the previous experiments, the compressive stress was used for pre-straining. In situ small-angle neutron scattering (SANS) was employed, which enabled the determination of the morphology directly at high temperature.
    Trvalý link: http://hdl.handle.net/11104/0006660