Published 06/10/2021 at 357 × 302 in Microstructures and mechanical properties of 4 wt%TiB2/Al-Si-Cu-Zn (T6) composite thin-walled shell housing fabricated by high pressure die casting Figure 3. XRD spectra of die-cast 4 wt%TiB2/Al-Si-Cu-Zn composite. Figure 3. XRD spectra of die-cast 4 wt%TiB2/Al-Si-Cu-Zn composite.