Počet záznamů: 1

Fatigue cracks in Eurofer 97 steel: Part I. Nucleation and small crack growth kinetics

  1. 1.
    0359062 - UFM-A 2012 RIV NL eng J - Článek v odborném periodiku
    Kruml, Tomáš - Polák, Jaroslav
    Fatigue cracks in Eurofer 97 steel: Part I. Nucleation and small crack growth kinetics.
    Journal of Nuclear Materials. Roč. 412, 1 (2011), s. 2-6 ISSN 0022-3115
    Grant CEP: GA ČR GA106/09/1954; GA ČR GA101/09/0867
    Výzkumný záměr: CEZ:AV0Z20410507
    Klíčová slova: ferritic-martensitic steel * low cycle fatigue * small crack growth * fatigue life prediction
    Kód oboru RIV: JL - Únava materiálu a lomová mechanika
    Impakt faktor: 2.052, rok: 2011

    Fatigue crack nucleation and growth were studied in the Eurofer 97 ferritic–martensitic steel at room temperature. Cylindrical specimens with a shallow notch and no artificial crack starters were used. The constant strain amplitude cycling was adopted. First fatigue cracks nucleate at about 5% of the fatigue life along the surface slip bands. If a crack overcome the barrier of the first high angle boundary, its growth is regular and an exponential growth law is observed. This law may be used for the residual fatigue life prediction based on the small crack growth kinetics.
    Trvalý link: http://hdl.handle.net/11104/0196931