Austenitic High-Performance Materials for Non-Rotating Components in Stationary Gas Turbines

Abstract

Five essential requirements for gas turbine materials exposed to high temperatures are discussed: - High resistance to oxidation and high temperature corrosion - High creep strength especially under condition of thermal stress - High fatigue strength under conditions of vibrational and thermal stress - Good workability since complicated deformation and machining processes are often necessary - Good weldability It is not always possible to make all these requirements totally compatible. This is because certain requirements have to be emphasized for reasons of application. In most cases compromises will have to be made in regard to workability.