Characterization at a local scale of a laser-shock peened aluminum alloy surface

► The paper investigates mechanical surface states and surface potential modifications induced by Laser Shock Processing (LSP) on a 2050-T8 aluminum alloy. ► Local techniques (EBSD, nanoindentation, SKPFM) are used. ► Little metallurgical and work-hardening effects are obtained after LSP. ► LSP reduces inclusion-matrix surface potential gradients due to compressive surface stresses.