With an emphasis on titanium alloys, nickel-based superalloys, and steels, India’s Gas Turbine Research Establishment (GTRE) is scheduled to carry out comprehensive testing on a variety of materials for aero engines. This project is a component of GTRE’s larger endeavors to improve the Kaveri engine program’s performance, especially with the addition of a new afterburner section designed to boost thrust capabilities.
Because of its high strength-to-weight ratio and low density, titanium alloys are preferred in aero engine applications. Since the 1950s, Ti-6Al-4V has been the most widely used titanium alloy in this industry. In order to endure higher temperatures and operational stresses in the engine environment, more sophisticated alloys, such Ti6246 and Ti6242, have been created. These alloys are especially crucial in engines’ lower temperature portions where weight reduction is essential.
Superalloys based on nickel are crucial for parts like turbine blades and discs that are subjected to high temperatures and strains. These materials are perfect for high-performance engine applications since they can function well at temperatures higher than 1000°C. Complex manufacturing processes that improve the mechanical properties of these superalloys, including as investment casting and powder metallurgy, are frequently used. The complex processing needed to create high-strength nickel superalloys continues to be a major obstacle.
Even though they are less frequently used in high-temperature applications than superalloys based on titanium and nickel, several steel alloys are nonetheless used in different parts of aviation engines. They have favorable mechanical qualities and are frequently utilized in components that are not subjected to high temperatures.
Thorough ground testing will be part of GTRE’s future phases to confirm these materials’ functionality and longevity in operational settings. With a target thrust capability of up to 80 kN, the goal is to guarantee that the Kaveri engine satisfies the exacting specifications of contemporary fighter jets. The Indian Air Force (IAF) and Hindustan Aeronautics Limited (HAL) will collaborate on this testing, which will include platforms like the MiG-29 for thorough assessments.
GTRE’s concentration on innovative materials such as titanium alloys, nickel-based superalloys, and specialized steels is vital for the development of next-generation aero engines that can meet both domestic and international defence needs.
