Figure 7.

Optimal Ti content design for A356-0.005Sr alloy. (a) Fractions of different phases/structures (i.e., a-(Al), eutectic (Al), eutectic Si, and Al₃Ti) in A356-0.005Sr alloys with different Ti contents obtained by computational thermodynamic; (b) simulation results of the mechanical properties, quality index, and the expected improvement of A356-0.005Sr with different Ti content. Solid symbols represent the experimental data or the quality index corresponding to the experimental data. The lower part of the figure represents the expected improvement result based on the quality index, with the recommended point that the Ti content is 0.08 wt.%.