Abstract
Fracture characteristics and fracture mechanism of TiB particulate-reinforced Ti-6Al-2Sn-4Zr-2Mo composites with various volume fraction of TiB particles fabricated by blended elemental method were investigated by carrying out static and dynamic fracture toughness tests.Both static and dynamic fracture toughness values decrease with increasing the volume fraction of TiB particles. The dynamic fracture toughness value is fairly smaller than the static fracture toughness value. The ratio of dynamic fracture toughness value to static fracture toughness value increases as the volume fraction of TiB particles increases. The fracture toughness values increases with increasing the degree of crack deflection which is greater under static conditions than under dynamic conditions. The fraction of TiB particles on the fracture surface is greater in the specimen with greater volume fraction of TiB particles, and is greater under dynamic conditions than under static conditions.
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