Influence of Hydrogen on the Initiation of Creep-Fatigue Cracks in Plates Near Stress Concentrators

Influence of Hydrogen on the Initiation of Creep-Fatigue Cracks in Plates Near Stress Concentrators

We formulate a mathematical model for the determination of the effect of hydrogen on the period of initiation of creep-fatigue macrocrack in the vicinity of a stress concentrator in a plate. By using this model, we find the period of initiation of a macrocrack for a strip with two side notches under...

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Veröffentlicht in:Materials science (New York, N.Y.) N.Y.), 2015-01, Vol.50 (4), p.507-515
Hauptverfasser: Andreikiv, O. E., Dolins’ka, I. Ya, Dobrovol’s’ka, L. N., Yavors’ka, N. V.
Format: Artikel
Sprache:eng
Schlagworte:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Concentrators
Crack initiation
Fracture mechanics
Hydrogen
Materials Science
Mathematical models
Plates
Solid Mechanics
Steels
Stresses
Structural Materials
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Beschreibung
Zusammenfassung:We formulate a mathematical model for the determination of the effect of hydrogen on the period of initiation of creep-fatigue macrocrack in the vicinity of a stress concentrator in a plate. By using this model, we find the period of initiation of a macrocrack for a strip with two side notches under cyclic loads, high temperatures, and the action of hydrogen-containing medium. It is shown that hydrogen increases the rate of crack initiation in steel plates.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-015-9748-5