The multiaxial fatigue behavior of 2A12 aluminum alloy was studied with SDN100/1000 electro-hydraulic servo tension-torsion fatigue tester under multiple variables. and the failure mechanism was investigated by scanning electron microscopy (SEM). The results show that under the loading condition of equivalent stress. the fatigue life decreases with the increase of phase angle. https://www.hindirochakkahaniya.com/