Solid-State Diffusion Welding of Commercial Aluminum Alloy with Pure Copper

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 diffraction. Results showed that increasing had an apparition intermetallics Al alloy/Cu interface. Five intermetallic phases namely Al2Cu, AlCu, Al3Cu4, Al2Cu3, Al4Cu9 identified mechanical properties welded joint Al/Cu varied also temperature. nanoindentation measurements highest values hardness recorded in AlCu Al3Cu4 phases. success these dissimilar metals can be used for battery cables or form heat exchanger plates vehicles.