Low Cycle Fatigue (LCF) tests

Test samples smooth or with notch are pre-charged in gaseous hydrogen environment (T = RT ÷ 500°C, p = 1 ÷ 200bar) and then subjected to LCF test according to conditions of interest, with reference to ASTM E 606. Diffusible hydrogen content is measured at the end of the test for each specimen to correlate mechanical performance and H content in the metal.