Effect of Gas Bubbling Filtration Treatment on Microporosity Variation in A356 Aluminium Alloy

Choongdo Lee, Taeil So, Kwangseon Shin

Fig. 7 SEM images of the fractured specimens; no GBF a, high magnification b, c for A- and B-positions in a, 10-min GBF treatment with impeller of 2-mm-dia. aperture d and spectral results e, f of EDS analysis for A- and B-positions in a