Comprehensive Analysis of Mechanical and Thermodynamic Properties of Inconel 718: A First-Principles Study

This study provides a comprehensive investigation into the mechanical and thermodynamic properties of Inconel 718, a nickel-based superalloy widely used in high-temperature and high-stress environments such as aerospace, power generation, and chemical processing. By examining the effects of temperature and pressure variations, the study evaluates critical mechanical properties, including Young’s modulus, shear modulus, and Poisson’s ratio, while also establishing correlations between key alloying elements (Nb, Mo, Ti) and essential performance metrics like yield strength, ductility, and thermal stability. Additionally, thermodynamic parameters such as Gibbs free energy of mixing, entropy of mixing, and valence electron concentration are analyzed to assess phase stability and suitability for extreme conditions. Utilizing theoretical modeling, thermodynamic simulations, and experimental data, the study enhances the understanding of Inconel 718’s behavior under varying thermal conditions. The findings offer valuable insights into optimizing alloy composition, improving component design, and extending material longevity in high-performance engineering applications.