Poster Presentation : Microstructure Observation of the Nickel-base Superalloy

Superalloys are used at about 700 to more than 1000 and the superalloys based on nickel are used in harsh environments which general structural material can not withstand. Turbine disc is a component that is exposed to high temperature/high stress and are made of Ni-base superalloy. Ni-base superalloy has been actively studied. In this study, we observed microstructure of nickel-base superalloys by electron microscopy. It was found that the microstructure had second phase with nanometer size.