| Abstract Scope |
The mechanical behavior of the so-called ductile Senkov alloy (TiZrHfNbTa), and its various lower-order and off-equiatomic derivatives will be discussed as a function of temperature and strain rate. Yield strength, ultimate tensile strength, work hardening behavior, uniform elongation and total strain to failure will be correlated with alloy chemistry and microstructure. In the quinary Ti-Zr-Hf-Nb-Ta system, there is large composition range of off-equiatomic compositions that can be synthesized as single-phase microstructures. Surprisingly, the measured mechanical properties do not vary significantly over this range with the observed variations explainable by volume misfits and differences in shear modulus. This provides a large playground for the design of precipitate-strengthened alloys with varying precipitate characteristics (volume fraction, size, and spacing) but relatively constant matrix properties. After comparing our results to those in the literature, directions for future research will be discussed. |