Fraunhofer-Institut für Werkstoffmechanik IWM
The motivation of this study was to compare tensile properties of a variety of steels with a body cubic centered (bcc) microstructure using conventional specimens (CS) and tubular specimens (TS) at relevant high pressure hydrogen conditions, i.e. hydrogen pressures between 2.5 and 15 MPa at room temperature in order to perform an assessment of the TS method. In other words, this study focusses on the differences in tensile properties measured by two different specimen geometries and interprets such results in the context of hydrogen exposure. Due to the wide variety of steels tested in this study, some assumptions can be concluded about the influence of the microstructure on hydrogen effects.
Abstract
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