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

Figure 4

Foaming behavior in pipe A: (a) 255 s, 678.8°C; (b) 270 s, 682.6°C; (c) 285 s, 686.4°C; (d) 300 s, 692.5°C; (e) 310 s, 700.0°C; (f) 320 s, 709.2°C; (g) 330 s, 718.6°C; (h) 340 s, 733.1°C; (i) 350 s, 748.2°C; (j) 360 s, 760.3°C.

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