Influence of Hole Cold Expansion on Microstructure and Fatigue Life of 2124 Aluminum Alloy
The change of fatigue life and microstructure of 2124-T851 thick plate after cold expanded with different deformation was studied by fatigue test, TEM, SEM and X-ray diffraction apparatus.The results show that the fatigue life increases with the increase of expanded deformation until the maximum value is reached, and then decreased rapidly with the