Settling, Casting Fluidity and Solidification Behavior of Aluminum-SiC Particle Composite

Influence of Interfacial Reaction on the Fluidity of A356 Al-SiC p Composites—A Theoretical Approach

“…[9] is in good agreement with experimental results of Yarandi et al [30] and 1.1 to 1.4 times higher than the results of Lloyd et al [31] (Figure 2). Further, Yarandi et al [30] have observed no change in fluidity length with the increase of pouring temperature beyond 750°C, whereas the theoretically calculated fluidity length increases linearly as a function of pouring temperature for the entire temperature range studied.…”

“…In the case of A356 Al-15 vol pct SiC p composites, the theoretically calculated fluidity length increases with pouring temperature for the entire temperature range studied and is in good agreement with the experimental results of Yarandi et al [30] up to 750°C ( Figure 3). However, above this temperature, Yarandi et al [30] have observed a reduction in fluidity length.…”

“…However, above this temperature, Yarandi et al [30] have observed a reduction in fluidity length. Similar results have been observed in A356 Al-20 vol pct SiC p composites, where the theoretical result agrees well with the Lloyd et al [31] results only up to 710°C (Figure 4).…”

“…Further, it has been observed that the theoretically calculated fluidity length using the modified Flemings Eq. 2.38 [20] 3.2 [27] 2.36 [6] Critical solid fraction 0.29 [22] --Latent heat of fusion (J/g) 389 [27] --Specific heat (J/g°C) 1.080 [21] 1.3 [27] 1.18 [28] Surface tension (dyne/cm) 889 [29] --Viscosity (g/cmAEs) 1.3 · 10 -3 [24] -- Yarandi et al [30] Theoretical value -Equation ( …”

Effect of Reinforcement Particles on the Fluidity and Solidification Behavior of the Stir Cast Aluminum Alloy Metal Matrix Composites

“…Sahoo and Sivaramakrishnan [51] measured the fluidity of an Al-8.3Fe-0.8V-0.9Si alloy with standard spiral test in sand mold and reported an increase of 0.4% in the fluidity length when the melt temperature was increased by 1℃, in the temperature interval of 860-900℃. Yarandi et al [52] found that the A356 alloy-SiCp composite(cast in a permanent mold) containing 15 vol.% SiCp of 9µmdiameter had the lowest flowability, lower than that of composite containing 20 vol.% SiCp of 14µm diameter, indicating that particle size has a strong influence on flow and spiral length. The decrease with size has been attributed to an increase in the total surface area of particulates causing more resistance to fluid flow as a result of stagnant boundary layers around the particles.…”