Morphological Investigation of Foamed Aluminum Parts Produced by Melt Gas Injection

Table 4

Circularity parameter.

Mould type	Pressure	Gas	C range	C average value
SM	Ambient	Nitrogen	0.33–0.95	0.799
SM	Suction	Nitrogen	0.43–0.94	0.912
ME	Ambient	Air	0.28–0.92	0.663
ME	Suction	Nitrogen	0.57–0.96	0.947
BM	Suction	Nitrogen	0.52–0.93	0.903
BM	Suction	Air	0.57–0.95	0.862