Figure 6. Castings of the 4 wt%TiB2/Al-Si-Cu-Zn composite fabricated by the HPDC at different injection velocity: (a) 0.8 m s−1; (b) 1.16 m s−1; (c) 1.8 m s−1; (d) 2.5 m s−1; (e)–(h) filling ends of the castings (a)–(d).
Figure 6. Castings of the 4 wt%TiB2/Al-Si-Cu-Zn composite fabricated by the HPDC at different injection velocity: (a) 0.8 m s−1; (b) 1.16 m s−1; (c) 1.8 m s−1; (d) 2.5 m s−1; (e)–(h) filling ends of the castings (a)–(d).