Interaction of Creep and High Cycle Fatigue of IN 713LC Superalloy

0480264 - ÚFM 2018 RIV CH eng C - Konferenční příspěvek (zahraniční konf.)
Horník, V. - Šmíd, Miroslav - Hutař, Pavel - Kunz, Ludvík - Hrbáček, K.
Interaction of Creep and High Cycle Fatigue of IN 713LC Superalloy.
Materials Structure & Micromechanics of Fracture VIII. Zürrich: Trans Tech Publications, 2017 - (Šandera, P.), s. 595-598. Solid State Phenomena, 258. ISBN 978-3-03835-626-4. ISSN 1662-9779.
[MSMF8. International Conference on Materials Structure and Micromechanics of Fracture /8./. Brno (CZ), 27.06.2016-29.06.2016]
Grant CEP: GA TA ČR(CZ) TA04011525; GA MŠMT LM2015069
Institucionální podpora: RVO:68081723
Klíčová slova: Creep-fatigue interaction * Fractography * High temperature * IN 713LC * Superalloy
Obor OECD: Audio engineering, reliability analysis
https://www.scientific.net/SSP.258.595

The study deals with the interaction of creep and high cycle fatigue of cast polycrystalline nickel-based superalloy IN 713LC at high temperatures. Previous works indicated that creep lifetime of superalloy structures was un-affected or even slightly increased in the cases with superimposed vibrations. The reason for this behaviour was not well described up to now. Therefore, set of fatigue tests was conducted at high mean stresses level to observe this phenomenon. The mean stress was kept constant while the stress amplitudes were selected in order to measure wide range of conditions from pure creep to pure fatigue. Fractographic analysis by scanning electron microscopy (SEM) was done with the aim to identify governing damage mechanisms for particular test conditions as a preliminary evaluation of conducted tests.
Trvalý link: http://hdl.handle.net/11104/0276114