Spheroidization and Coarsening of Eutectic Si Particles in Al-Si-Based Alloys

Table 3

Characteristics of Si particles in 319 alloy (coded A) at different conditions (Sr-modified).

Condition	Average particle area (μm^2)		Average particle length (μm)		Particle roundness (%)		Particle aspect ratio		Density (particles/μm^2)
	Μ	σ	μ	Σ	μ	σ	μ	σ	μ
As-cast	3.61	8.48	2.79	2.91	74.67	23.75	1.91	0,73	15212
8 h@510°C	6.71	12.75	3.54	3.31	81.25	18.81	1.71	0.66	10679
24 h@510°C	11.71	18.46	5.04	4.58	70.97	24.76	1.89	0.83	6492