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

Table 1

Schematic of the foaming process of a single precursor pipe.

Conditions	Process parameters		Structure parameters
	Furnace temperature (°C)	Heating rate (°C·s^−1)	Pipe diameter (mm)	Wall thickness (mm)	Length (mm)	Section ratio (%)
Steel pipe	760	3.9	25	0.7	90	0.2
A	800	4.4
Steel pipe	740	3.9	23	0.7	90	0.26
B	760	3.9