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