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The next generation of aeronautic engines aims at continuously improving performances and efficiency, reducing at the same time emissions. However, increasing this temperature severely stresses the turbine constitutive materials. Current casing constitutive materials are designed to work at ca. 650°C and superalloys like Inconel 718 or Waspaloy are typically used. Different aeronautic propulsion producers have different strategies to develop more efficient turbines, but they are all trying to find materials and manufacturing routes capable to provide casings which can readily operate at 700 to 800°C.
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