Journal of Materials Science: Materials in Engineering

Table 1 The values of K and n for P/M pure Al, Al-2 wt.%Cu, Al-4 wt.%Cu, and Al-6 wt.%Cu preforms with initial relative densities of 80, 85 and 90 %

From: Prediction of ductile fracture initiation for powder metallurgical aluminum-copper preforms using FEM

Material	Strain hardening exponent, n			Strength coefficient, K
Material	IRD = 80 %	IRD = 85 %	IRD = 90 %	IRD = 80 %	IRD = 85 %	IRD = 90 %
Al	0.32	0.31	0.28	244.23	249.14	261.91
Al-2 wt.% Cu	0.49	0.44	0.41	296.49	313.88	366.14
Al-4 wt.% Cu	0.51	0.45	0.42	327.99	345.16	381.46
Al-6 wt.% Cu	0.51	0.46	0.43	347.93	362.50	399.18

Back to article page