Propagation of cracks in composite bimetallic plates under hydrogen effect

Keywords

composite bimetallic plate, hydrogen-containing environment, high-temperature creep, energy approach, stress intensity factor, prefracture zone, period of subcritical growth of a hydrogen-mechanical crack.

Cite as

Andreikiv O. Ye., Dolinska I. Ya., Nastasiak S. V., and Liubchak M. O. Propagation of cracks in composite bimetallic plates under hydrogen effect. Physico¬chemical Mechanics of Materials. 2024. 60(3), 105-109.

https://doi.org/10.15407/pcmm2024.03.105

Abstract

A computational model is proposed to determine the residual life of a composite bimetal­lic plate made of semi-infinite plates of 15Kh2MFA and 321 steels with a rectilinear crack. The plate is statically tensioned at a high temperature and under the influence of a hydrogen-con­taining environment by uniformly distributed forces perpendicular to the line of its place­ment. The model is based on the energy approach about the balance of external for­ces and the resul­ting internal energies. This model is implemented numerically. Graphical dependen­ces of the change in the residual service life of a plate on the size of the initial crack and the influence of a hydrogen-containing environment were constructed.

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