LAUSR

Abstract In the present analysis, it was shown that an altered process sequence involving ageing prior to cold rolling of a twin-roll cast strip can provide a viable manufacturing route generating high strength conductor Al-Mg-Si materials. The process sequence twin roll casting, age-hardening, cold rolling and optional back-annealing enables tailoring the conductor’s properties. For maximum strength, age-hardening annealing and heavy cold rolling are applied, resulting in a yield strength of ∼250 MPa at a conductivity exceeding 32 MS/m. For maximum conductivity, an additional back-annealing is introduced yielding about 34 MS/m and a moderate yield strength greater than 180 MPa. Both options provide an improved strength to conductivity ratio compared to material from standard processing.