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Strain rate effects for the high strength, metastable beta-titanium alloy Ti-8Mo-8V-2Fe-3Al are assessed in terms of tensile and fracture toughness behavior. It is shown that as the strain rate increases the yield strength, ultimate tensile strength, and ductility also increase. As a result of the decrease in the amount of intergranular fracture as the strain rate is increased, the dynamic fracture toughness values KId are greater than those obtained under static conditions as given by KQ.
Supervisory materials engineer, Army Materials and Mechanics Research Center, Watertown, Mass.
Stock #: JTE10524J