Effects of ductile phase volume fraction on the mechanical properties of Ti-Al3Ti metal-intermetallic laminate (MIL) composites

▶ Residual Al improves the mechanical properties of Ti-Al3Ti MIL composites. ▶ Residual Al can eliminate intermetallic centerline delaminations in MILs. ▶ Low levels of residual Al increase fracture toughness in MIL composites. ▶ MIL stiffness, strength, and fracture toughness can be optimized at low Al levels.