Abstract
Microstructural changes occurring in austenitic–ferritic stainless steel after two variants of thermo-mechanical treatment and subjected to cathodic hydrogen charging were studied using atomic force microscopy operated in the magnetic force imaging mode. Hydrogen-induced phase transformations were observed to occur in both steel variants. In austenite, they were manifested by the formation of α ′ martensite magnetic laths. In ferrite, the microstructural changes resulted in a pronounced surface relief being formed.
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