Temperature effects on deformation substructures and mechanisms of a Ni-based single crystal superalloy

Mechanical behaviors of a Ni-based single crystal superalloy have been investigated by tensile testing at various temperatures. Deformation substructures and mechanisms have been systemically revealed from micrometer to atomic scales by using advanced scanning electron and scanning transmission electron microscopes. Results show that deformation mode of the alloy strongly depends on the temperature due to competitive responses of the γ and γ′...