Coarsening Behavior and Plastic Flow of Ti-6Al-2Sn-4Zr-2Mo-0.1Si with an Ultrafine Microstructure

Coarsening behavior and superplastic-flow response of Ti-6Al-2Sn-4Zr-2Mo-0.1Si with an ultrafine, equiaxed-alpha microstructure were interpreted in the context of classical models. Static coarsening was shown to follow modified Lifshitz–Slyosov–Wagner (LSW) kinetics. The rate of dynamic coarsening was six times more rapid than the corresponding static rate due to enhanced diffusion of solutes in the beta matrix. Last, a generalized constitutive...