Innovative rotary swaged Al/Cu laminated wire conductors: characterisation of structure and residual stress

L Kunčická, R Kocich
2020 IOP Conference Series: Materials Science and Engineering  
This study presents innovative, uniquely sequenced Al/Cu laminated composite wires having perspective usage for various applications, from transportation to electrotechnics. The composites were processed via the industrially applicable technology of rotary swaging, which was performed at 20 °C and 250 °C to provide the possibility to compare the effects of different swaging conditions on structure characteristics of the wires. The work-pieces were gradually swaged down to the final wire
more » ... s of 5 mm, the total swaging degree for each swaged-piece was 3.6. After swaging, both the aluminium components of the swaged wires exhibited recrystallized ultra-fine-grained (UFG) structures with minor presence of residual stress, certain presence of stress was observed within the refined Cu structures. Microhardness measurements revealed occurring work hardening, especially for the 20 °C swaged composite.
doi:10.1088/1757-899x/739/1/012007 fatcat:ddxnlhtrnvdbfd7g3mlforqsl4