THE HIGH TEMPERATURE FATIGUE BEHAVIOR OF A THIRD GENERATION GAMMA TIAL ALLOY FOR GREENER TURBINES (MAT2016-77189-R)

Enhancing transport sustainability is one of the great challenges of the XXI century. A reduction of at least 25% in fuel consumption and CO2 emissions is ambitioned for the next generation of engines. Achieving this goal requires the integration of advanced materials and efficient designs. The successful incorporation into aerospace intermediate pressure turbines (IPT) of lightweight 3rd generation titanium aluminides (TiAl), endowed with a better mechanical response at high temperatures and cyclic stresses than Ni-based superalloys, would contribute to dramatically improve efficiency under service conditions. However, the micromechanisms governing deformation and fracture of these materials are still unknown.

The overarching aim of the CRACKTIAL project is to gain fundamental knowledge on the influence of microstructure, defects and temperature on the monotonic and fatigue response of a 3rd generation gamma-TiAl alloy within a wide temperature range. It is foreseen that the outcome of the present project will contribute to a more efficient defect tolerant design of turbine components that can operate safely at increasingly demanding temperature and cyclic stress conditions.

  • PIs: Dr. M.T. Pérez Prado and Dr. I. Sabirov
  • Funding: 90.000 € (+ 1 FPI PhD fellowship)
  • Duration: 2017-2020
  • Agency: Spanish Ministry of Economy and Competitiveness (MINECO).
  • Partners: IMDEA Materials Institute.
  • Supporting companies: Industria de Turbopropulsores (ITP).

 

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