Microstructure and mechanical properties characterization of architectured copper aluminum composites manufactured by cold-drawing

The present study investigates the mechanical behavior of severely plastic-deformed Cu-Al composite wires with different diameters and heat-treatments. Each holds 61 restacked copper-clad aluminum wires. bimetal composites were cold-worked up to ranging from 1 mm 3 mm, without any intermediate heat treatment. All contain hexagonal fibers a continuous copper network extended outer surface into center samples. Tensile tests then performed on as-drawn treated latter at 400 °C for 30 min 6 h. treatments firstly induce recrystallization in both constituents, giving rise fine-grained microstructure secondly prompt formation several intermetallics. Without treatment after processing, architectured exhibit ductility value similar conventional larger yield stresses compared them, regardless diameter. intermetallic compounds, forming as result treatment, affect stress, strain hardening mechanisms. Finally, results are discussed terms grain size, texture, intermetallics volume fraction coupling between phases.