Investigation of New Alternate and Conventional Materials for Manufacturing High Pressure Turbine Disk

Abstract

Abstract Key to sustainable aviation is to find an efficient way to optimize the design of an aircraft and its parts irrespective of its size. Innovation of new materials with exceptional mechanical properties with reduced overall weight can contribute substantially towards a greener environment. During each operating cycle of an aircraft engine the blades of gas turbine are subjected to elevated temperature along with high levels of stress, especially in the high-pressure region. Another factor that overlaps this condition of quasi steady state are the induced stresses due to vibrational load by the local perturbations. The main objective of this study is to identify the alternate materials that could be used as a replacement for the conventional materials. Based on the loads endured by the blades during the operation of the engine a selection criterion for the materials are characterized. These parameters are then used to identify the potential materials for manufacturing the high-pressure turbine disk using Granta Edupack software. The manufacturing routes play an important role in the structure of the material. The paper discusses common manufacturing routes for both conventional and alternate materials along with its effect on the properties of the material based on cast and wrought or ingot metallurgy, powder metallurgy, mechanical and electrochemical method. The process of manufacturing of these superalloys and how they affect the chemical compositions of these materials are also discussed.