Саноатда рақамли технологиялар 3-том 4-нөмір (2025) · 129-134-беттер
HIGH-TEMPERATURE HYDROGEN ATTACK (HTHA) IN CARBON STEELS, MICROSTRUCTURAL DEGRADATION, DAMAGE MECHANISM, AND TECHNOLOGICAL PREVENTION METHODS
Azimov, Salohiddin Turamuradovich, Rakhimov, Ganisher Bakhtiyorovich, Азимов, Салохиддин Турамурадович, Рахимов, Ганишер Бахтиёрович, Azimov, Salohiddin Turamuradovich, Raximov, G‘anisher Baxtiyorovich
Аңдатпа
High-Temperature Hydrogen Attack (HTHA) is a critical degradation phenomenon that significantly reduces the service life of carbon and low-alloy steels widely used in the oil and gas, chemical, and power industries. This paper provides a comprehensive analysis of the HTHA mechanism, susceptible materials, microstructural changes, and its occurrence in welds and heat-affected zones. Based on international standards such as ASME RP 941, API RP 571, and others, safe operating limits, material selection strategies, and the effectiveness of modern non-destructive examination (NDE) methods are discussed. The study also examines the role of alloying elements, the application of post-weld heat treatment (PWHT), and cladding technologies in improving metallurgical compatibility. The findings have been used to develop practical recommendations for early detection and prevention of HTHA in industrial equipment.
HTHAhydrogenhigh temperaturecarbon steelweldingmicrostructural degradationmetallurgical incompatibilityRP 941HTHAводород
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