Figure 7.

3D rendering of the gas bubble arrangement in a liquid AlSi8Mg4 foam recorded with 1000 tps. The metallic matrix is kept transparent and the bubbles are colored (inverted contrast). a) Two separated bubbles marked in cyan and blue. b–d) 3D sequence of the rupture of the separating film in just <1 ms followed by the coalescence of the two bubbles to one. e,f) Relaxation of the resulting bubble by adopting a more spherical shape in the next ≈1.2 s. g) Bubble volumes and anisotropy of bubble 1 over time (Video S5, Supporting Information). h–j) Horizontal slices showing the sequence of the rupture of the separating film.