Crack tip strain localisation on mechanics of fracture of heat resistant steel after hydrogenation

Crack tip strain localisation on mechanics of fracture of heat resistant steel after hydrogenation

The fracture toughness of steel 15Kh2MFA(ІІ) after the PTL was investigated. It was established that the crack start is a multilevel process, in which the defining role is played by the turning modes of deformation. Regardless of the PTL modes in air and in the aggressive medium (electrolytic hydrog...

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Veröffentlicht in:Theoretical and applied fracture mechanics 2013-02, Vol.63-64, p.63-68
Hauptverfasser: Yasniy, P.V., Okipnyi, I.B., Maruschak, P.O., Panin, S.V., Konovalenko, I.V.
Format: Artikel
Sprache:eng
Schlagworte:
Failure
Fatigue crack
Fracture
Fracture mechanics
Fracture toughness
Heat resistant steels
Hydrogen embrittlement
Hydrogenation
Multilevel
Steels
Strain
Strain localisation
Thermomechanical loading
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Beschreibung
Zusammenfassung:The fracture toughness of steel 15Kh2MFA(ІІ) after the PTL was investigated. It was established that the crack start is a multilevel process, in which the defining role is played by the turning modes of deformation. Regardless of the PTL modes in air and in the aggressive medium (electrolytic hydrogen), the resistance to brittle failure of the steel investigated increases as compared to static fracture toughness of the material in the initial state.
ISSN:0167-8442
1872-7638
DOI:10.1016/j.tafmec.2013.03.007