Effective boundary of deep-rolling treatment and its correlation with residual stress stability of Al–Mg–Mn and Al–Mg–Si–Cu alloys

The deep-rolled aluminum alloys AA5083 (Al–Mg–Mn) and differently aged AA6110 (Al–Mg–Si–Cu) were cyclically deformed particularly in the low cycle fatigue regime for different temperatures up to 250 °C as compared with the polished condition. The effective boundary of deep rolling was investigated and analyzed using s/n data and the stability of near-surface residual stresses and work hardening. It was found that the near-surface work hardening is the major factor influencing the fatigue lifetime of the deep-rolled aluminum alloys.