Tensile Properties of an Electrolytically Hydrogen Charged Duplex Stainless Steel Affected by Strain Rate

To provide a reliable relationship between hydrogen embrittlement (HE) and the behavior of hydrogen in duplex stainless steels (DSSs), we evaluated the tensile behavior of electrolytically charged DSS (JIS SUS329J4L) specimens at various strain rates. Immediately after hydrogen charging, tensile tests were performed at strain rates ranging from 1.38×10−7 to 1.38×10−3s−1. Fracture surface was evaluated by scanning electron microscope (SEM) and the concentration of hydrogen was measured by thermal desorption spectroscopy (TDS).