Abstract Scope |
Ni-based superalloys, recognized for their high-temperature strength, creep resistance, and corrosion resistance, are commonly utilized in gas turbine vanes and blades. This research investigates the electron beam melting (EBM) additive manufacturing process for René 80 superalloy, which contains over 40% γ' phase. In order to optimize the alloy composition and EBM process parameters, the study involved reducing the Ti content from 5 to 3 wt%, adding 2.5 wt% Ta, and introducing 1.0 wt% Hf to the alloy. These adjustments resulted in improved manufacturability, fewer defects, and enhanced high-temperature strength. The manufactured material demonstrated better properties than the traditional cast samples. This study highlights the potential of EBM in manufacturing high-performance Ni-based superalloys for gas turbine applications, offering an alternative to conventional casting techniques. The optimized process parameters and alloy composition ensure that the resulting material exhibits the desired mechanical and thermal properties necessary for use in demanding high-temperature environments. |