Microstructural Characterization of Beryllium Treated Al-Si Alloys

Figure 4

(a) Temperature-time cooling curve and its first derivative obtained from the nonmodified alloy C3B, (b) the corresponding microstructure showing a noticeable larger size of the nodular β-Al₅FeSi phase (broken arrows) and the π-Al₈Mg₃FeSi₆ phase particles, and (c) enlarged microstructure showing small particles possibly Be-Fe phase and/or π-phase particles close to β-phase plate-black arrows.

(a)

(b)

(c)