Operating Conditions and Materials Selection and Development in Gas Turbines

摘要

Temperatures, temperature profiles, and stresses in gas turbine components; transient temperature conditions, occurring as a result of, e.g., throttle setting changes and affecting thermal fatigue life; and electrochemical corrosion, oxidation, hot corrosion, and erosion, as well as the factors which promote these types of attack, including atmospheric pollutants and fuel contaminants are discussed. Material selection criteria for compressor components, flame tubes, turbine blades, vanes and disks are considered. Directionally solidified eutectics, oxide-dispersion-strengthened alloys, fiber-reinforced superalloy composites and ceramics are assessed. Single crystal blade processing and powder metallurgy are treated.