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Higly Innovative Isothermal Forging of Gamma TIAL Alloy for LPT blades

European Union
Complete with results
Geo-spatial type
Total project cost
€568 817
EU Contribution
€284 408
Project Acronym
STRIA Roadmaps
Vehicle design and manufacturing (VDM)
Transport mode
Airborne icon
Transport policies
Societal/Economic issues,
Environmental/Emissions aspects,
Transport sectors
Passenger transport,
Freight transport


Call for proposal
Link to CORDIS

The proposal consisted of developing an alternative solution to the existing LPT blade on the Geared Turbo Fan made of cast nickel based alloy by transcending the work fundamentally performed on the TNM Gamma TiAl alloy.

This proposal was beyond the state of the art and was based on innovative isothermal forging process, advanced tooling devices, specific heat treatments and an optimized near net shape geometry.

Bringing together these conditions was mandatory to meet the engine manufacturer requirements in terms of microstructure and associated mechanical properties but also to target the cost challenge in the scope of a mass production activity.

Following RTD and Demonstration activities were to be performed through the project :

  • development of isothermal forging process parameters;
  • development of innovative toolings for the isothermal forging process;
  • development of optimized billet and blade designs for the isothermal forging process;
  • test hardware manufacturing.


Parent Programmes
Institution Type
Public institution
Institution Name
European Commission
Type of funding
Public (EU)
Specific funding programme
JTI-CS - Joint Technology Initiatives - Clean Sky
Other Programme
JTI-CS-2010-4-SAGE-04-002 Development of near net shape isothermal forging process for gamma-TiAl low pressure turbine blades


The technology applied today on the LPT section of engines were Ni-based castings. Outside Europe, the technology applied today for γ-TiAl manufacturing was casting with an alloy having lower mechanical properties compared with the TNM material. The development of the γ-TiAl forging technology will bring more benefit. It will contribute to the elevation of the European competitiveness with regard to today’s challenges of the aerospace market such as fuel burn, noise reduction, improved maintenance costs and global reliability.

The application of a forged blade in TiAl on the LPT section of the Geared Turbo Fan will customize the yield of the engine and then the fuel efficiency and the environmental performance of it. This application will open new markets for FdB because the forged blade will replace existing castings. It will support MTU into the introduction of the GTF on the various aircraft markets such as Large Single Aisle Re-Engining for commercial airplanes and business jets like MRJ and BA C-Series.

The introduction on the market was planned between mid-2013 and end 2015 for these engines. With the growing demand for Large Single Aisle aircraft (representing more than 70% of the Single Air Segment) and additional environmental challenges, it was FdB’s strategy to join MTU in the promotion of its GTF on the market. A further step was the GTF’s contribution under MTU’s Clean Air Engine program to the compliance with the ACARE targets meaning more safety, more quality and affordability and an improved air transport efficiency.


Lead Organisation
Forges De Bologne
RUE DES FORGES 39, 52310 BOLOGNE, France
Organisation website
EU Contribution
€284 408
Partner Organisations
EU Contribution


Technology Theme
Additive manufacturing
Adaptive manufacturing processes and Rapid Manufacture for Gamma Titanium Aluminides (γ-TiAl)
Development phase

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