1530 Fretting Fatigue Strength of Stainless Steels containing High Concentration of Hydrogen
Details
To investigate the effect of hydrogen concentration on fretting fatigue strength, fretting fatigue test was performed using two kind of hydrogen charged and uncharged specimens. Hydrogen concentration was 60ppm and 8ppm for the hydrogen charged materials and 0.13ppm for the uncharged material. The material was SUS304. The solution heat-treated and 40% strained materials were used. Fretting fatigue limit in air was decreased by hydrogen charge. Fretting fatigue limit of the hydrogen charged materials in hydrogen gas showed further decrease. Fretting fatigue limit in hydrogen gas was almost the same irrespective of hydrogen charge conditions.
