Počet záznamů: 1

Apparent Fracture Toughness of Low-carbon Steel CSN 411353 as Related to Stress Corrosion Cracks

  1. 1.
    0361566 - UTAM-F 2012 RIV GB eng J - Článek v odborném periodiku
    Gajdoš, Lubomír - Šperl, Martin - Siegl, J.
    Apparent Fracture Toughness of Low-carbon Steel CSN 411353 as Related to Stress Corrosion Cracks.
    Materials & Design. Roč. 32, 8/9 (2011), s. 4348-4353 ISSN 0261-3069
    Grant CEP: GA ČR(CZ) GAP105/10/2052; GA ČR(CZ) GPP105/10/P555
    Grant ostatní: GAMPO(CZ) FT-TA5/076
    Výzkumný záměr: CEZ:AV0Z20710524
    Klíčová slova: corrosion * fracture * fractography
    Kód oboru RIV: JL - Únava materiálu a lomová mechanika
    Impakt faktor: 2.200, rok: 2011

    The occurrence of cracks in structural components indicates a certain threat to their reliable operation, because these cracks can grow during operation and reach critical sizes, leading to fracture. The fracture resistance of a structural component is given by the fracture toughness of the material, determined on standardized specimens with a precycled fatigue crack, and the constraint. The fracture toughness itself depends also on the environment. There is enough evidence that in the conditions of the environment assisted cracking the fracture toughness can be significantly reduced by hydrogen mechanism. Our research results have confirmed this and have demonstrated a considerable reduction in the stress corrosion fracture toughness as compared to that related to fatigue cracks. This should be taken into account when assessing the integrity of structural components with stress corrosion cracks.
    Trvalý link: http://hdl.handle.net/11104/0198856
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