Fatigue characterization and modeling of 30CrNiMo8HH under multiaxial loading

▶ 30CrNiMo8HH has two distinct cracking mechanisms in torsion and biaxial loading. ▶ Specimen life is reduced by a maximum factor of five when the loading phase angle increased. ▶ Strain energy density parameter correlates fatigue results very well. ▶ The energy-based life prediction method successfully estimates life over all ranges of loading paths.