首页|In-Service Degradation of Structural Steels (A Survey)

In-Service Degradation of Structural Steels (A Survey)

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We analyze the mechanism of degradation of pearlitic steels depending on the operating conditions, such as, first of all, the temperature, stresses and hydrogenation. Microstructural, mechanical, and electrochemical indicators of the in-service degradation of structural steels and its main stages are systematized. As its most typical feature, we can mention the decrease in brittle-fracture resistance, which increases the hazard of the loss of structural integrity. Special attention is given to the stage of development of dissipated damage on the nano- and microscales and the corresponding mechanical effects. We also analyze the existing laboratory methods intended for the accelerated degradation of steels. A special role of hydrogenating media in the process of degradation of steel is demonstrated and the nondestructive methods of its evaluation are analyzed. The prospects of subsequent research in the problems of in-service degradation of steels intended for the hydrogen power-generating industry in the case of application of the existing networks of gas transit and distribution pipelines for the transportation of hydrogen and its mixtures with natural gas are discussed.

steeloperationhydrogenmicrostructuremechanical propertiescorrosionbrittle-fracture resistancehydrogen embrittlementGAS-PIPELINE STEELLONG-TERM OPERATIONMECHANICAL-PROPERTIESHYDROGENFAILUREMETALELBOW

Zvirko, O., I

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Natl Acad Sci Ukraine

2021

Materials Science

Materials Science

EISCI
ISSN:1068-820X
年,卷(期):2021.57(3)
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