Fig. 4From: Prediction of ductile fracture initiation for powder metallurgical aluminum-copper preforms using FEMEffect of copper content on the strain path and ductile fracture initiation for P/M Al, Al-2Â wt.% Cu, Al-4Â wt.% Cu, and Al-6Â wt.% Cu with initial relative density of 90Â %Back to article page