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

Table 2

Characteristics of Si particles in 319 alloy (coded A) at different conditions (nonmodified).

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	48.99	18.19	13.26	6.89	67.10	32.36	2.55	1.52	2365
8 h@510°C	86.55	49.69	15.63	13.04	60.87	31.94	2.48	1.42	1762
24 h@510°C	75.86	52.51	14.66	13.47	60.23	29.49	2.42	1.34	1455

Average value; standard deviation.