Počet záznamů: 1  

Fatigue crack growth in plasma-sprayed refractory materials

  1. 1.
    0501094 - ÚFP 2019 RIV US eng J - Článek v odborném periodiku
    Kovařík, O. - Materna, A. - Siegl, J. - Čížek, Jan - Klečka, Jakub
    Fatigue crack growth in plasma-sprayed refractory materials.
    Journal of Thermal Spray Technology. Roč. 28, 1-2 (2019), s. 87-97. ISSN 1059-9630. E-ISSN 1544-1016
    Grant CEP: GA ČR GB14-36566G
    Institucionální podpora: RVO:61389021
    Klíčová slova: fatigue crack growth rate * molybdenum * RF induction plasma * tungsten
    Obor OECD: Coating and films
    Impakt faktor: 2.522, rok: 2019
    https://link.springer.com/article/10.1007%2Fs11666-018-0790-3

    Fatigue crack growth in self-standing plasma-sprayed tungsten and molybdenum beams with artificially introduced notches subjected to pure bending was studied. Fatigue crack length was measured using the differential compliance method, and fatigue crack growth rate was established as a function of stress intensity factor. Crack opening under compressive stress was detected. Fractographic analysis revealed the respective crack formation mechanisms. At low crack propagation rates, the fatigue crack growth takes place by intergranular splat fracture accompanied by splat decohesion in Mo coating, eventually by void interconnection in W coating. Frequently, the crack deflected from the notch plane being attracted to stress concentrators formed by voids or favorably oriented splat interfaces. At higher values of the stress intensity factor, the intergranular cracking of splats becomes more common and the crack propagated more perpendicularly to the specimen surface.
    Trvalý link: http://hdl.handle.net/11104/0293100

     
     
Počet záznamů: 1  

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