The aim of this investigation is to study the effect time and temperature on solid-state diffusion welding commercial aluminum alloy 2xxx series with a pure copper at 425°C, 475°C, 500°C, 525°C during holding times from 15 min 240 min. main characterization techniques were optical microscopy, scanning electron energy dispersive spectrometry, nanoindentation, microhardness measurements, x-ray di...