Abstract A metastable β-type medium-entropy refractory alloy, Hf20Nb10Ti35Zr35, was designed to have a ductile BCC structure in the as-solution-treated state. The alloy was aged to achieve the combinations of strength… Click to show full abstract
Abstract A metastable β-type medium-entropy refractory alloy, Hf20Nb10Ti35Zr35, was designed to have a ductile BCC structure in the as-solution-treated state. The alloy was aged to achieve the combinations of strength and ductility. The strengthening mechanisms included transformation-induced plasticity, twinning-induced plasticity and precipitation strengthening. These multiple strengthening mechanisms can serve as a basis for alloy design and the improvement of the mechanical properties of alloys.
               
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