Effect of titanium addition on fracture toughness behavior of ZL108 alloy

Two different titanium alloying methods were applied to ZL108 alloy for preparing specimens containing titanium. The specimens were tested on the NITS 810 material test system for studying their behavior of the plane strain fracture toughness K-IC. The experimental data were analyzed by the statistical significance tests. The results show that the fiacture toughness of the ZL108 alloy containing titanium is superior to that of common ZL108 alloy containing no titanium, but there is no significant difference for different titanium alloying methods. Therefore titanium addition is an effective method for improving the fracture toughness of the alloy ZL108.