Superplasticity is the general potential property of materials of lattice structure. It's a process that materials establish a stable deformation process after they are deformed and become instability. It's mostly a boundary behavior, i.e. boundary gliding, transferring and shifting occurred as a microcosmic physical behavior. Realization of superplasticity is the result of accomodation between intrinsic and extrinsic qualification of material. Ceramic and ceramic-base-composite, metal-base-composite, inter...