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

• Published in: Materials science (New York, N.Y.) Vol. 50; no. 4; pp. 507 - 515
• Main Authors: Andreikiv, O. E., Dolins’ka, I. Ya, Dobrovol’s’ka, L. N., Yavors’ka, N. V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-01-2015; Springer; Springer Nature B.V
• Subjects: 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; period of the initiation of a creep-fatigue macrocrack; hydrogen-containing medium; stress intensity factor; stress concentrator
• ISSN: 1068-820X; 1573-885X
• DOI: 10.1007/s11003-015-9748-5

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.