Effect of HIP and Mixture of Rare Earth Elements on the Microstructure and Mechanical Performance of Aged Nanostructured Inconel 718

Abstract

The Ni-based superalloys Inconel 718 (IN718) are principally used in high-temperature processes owing to their excellent oxida tion resistance and high mechanical properties. They are widely employed in aeronautics, aerospace engines and other uses like power generation and chemical industries. The utilization of elements such as rhenium, hafnium, tantalum, niobium, and ruthenium has been growing to produce new alloys with superior properties to current ones. However, the use mixture of REE like cerium, lanthanum, neodymium and praseodymium in IN718 in conjunction with HIP has not been deeply studied; owing to that, this research work is focused on studying the effect of these elements, which possess high potential to generate modifications and the HIP influence to improve the microstruc tural and mechanical performance in the IN718.