A Study on Tensile Deformation Features of Ni-Based Super-Alloy Prepared by EB-PVD
Large-scale Ni-based super-alloy sheet has been prepared by electron beam physical vapor deposition (EB-PVD). Microstructure and the dislocation structures in the γ-γ′ double phase alloy under different temperature after tensile strain are studied with Transmission electron microscopy (TEM). The results show that the dislocation glide in single slip system and shearing mechanics, the dislocation climb with part shearing, absolute dislocation climb and cross slip, dislocation round are a course of the interacting degree between dislocation and γ′ phase gradually weakened under the tensile temperature from room temperature to high temperature, so as to decrease materials strength and increase plasticity.
L. Ma et al., "A Study on Tensile Deformation Features of Ni-Based Super-Alloy Prepared by EB-PVD", Applied Mechanics and Materials, Vols. 55-57, pp. 251-256, 2011