Published 04/10/2025 at 935 × 605 in The Effect of Microstructural Features, Defects and Surface Quality on the Fatigue Performance in Al-Si-Mg Cast Alloys Figure 1. Al-Si phase diagrams: a) hypoeutectic, b) eutectic, and c) hypereutectic microstructures. Figure 1. Al-Si phase diagrams: a) hypoeutectic, b) eutectic, and c) hypereutectic microstructures.