Foaming Behavior and Pore Structure Evolution of Foamed Aluminum under the Extrusion Constraint

Table 3

The structure parameters of pores in samples at different furnace temperatures.

Furnace temperature (°C)		Pipe A		Pipe B
		800	760	760	740
Sample temperature, Ts (°C)		710–750	710–750	710–750	710–750
Porosity, P0 (%)		72.4–78.7	69.8–76.1	69.5–74.4	71.0–75.1
Average equivalent diameter, Da (mm)		2.3–3.6	2.1–2.9	2.3–3.4	2.1–2.8
Average circularity, Ca		0.73–0.82	0.78–0.84	0.74–0.81	0.74–0.80
Maximum expansion point	Temperature (°C)	740	730	740	740
	Porosity, P0 (%)	78.7	76.1	74.4	75.1
	Average equivalent diameter, Da (mm)	3.6	2.7	2.6	2.5
	Average circularity, Ca	0.73	0.81	0.78	0.76