Abstract
The commercially available IMI-titanium alloys (IMI-125, 99.8% Ti and IMI-260, Ti 0.15% Pd) were heated for 1 h at 700 C in air then either furnace cooled or rapidly quenched in water. Specimens were deformed till fracture in tension was reached at 18 C. Different strain rates were employed. Results showed that strain rate has a slight effect on total strain to fracture. However on repetition of the heat treatment cycle, fracture strain decreases with the increase in strain rate. The ultimate tensile strength is slightly affected by strain rate of heat treated specimens while for the non-heat treated, as-received specimens, the ultimate tensile strength and the strain at which fracture occur decrease with increase in the strain rate.