2316 Influence of Non-diffusive Hydrogen on the Fatigue Behavior in Cold-Drawn High-Strength Steel With a Small Notch

The microstructure and mechanical properties of drawn and aged pearlitic steel wires

“…Hydrogen causes the deterioration of fatigue property of drawn wires. Nakatani [57,59] investigated the influences of diffusible and non-diffusible hydrogen on tensile fatigue test in as-drawn wires. Diffusible hydrogen decreases the number of cycles to fracture and fatigue limit [57].…”

“…Only diffusive hydrogen, which is trapped weakly (peak 1 hydrogen) in steels and desorbed from steels from room temperature to 200°C, determined using thermal desorption analysis (TDA), contributes to hydrogen embrittlement. Diffusible hydrogen also causes deterioration in fatigue property of drawn wires [57]. In contrast, non-diffusible hydrogen trapped strongly (peak 2 hydrogen) in steels and desorbed from steels at temperatures above 200°C, determined using TDA, is not involved in hydrogen embrittlement [56].…”

“…Nakatani [57,59] investigated the influences of diffusible and non-diffusible hydrogen on tensile fatigue test in as-drawn wires. Diffusible hydrogen decreases the number of cycles to fracture and fatigue limit [57]. On the other hand, non-diffusible hydrogen does not affect fatigue property [59].…”