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Home Aerospace & Aeronautics Billets for gas turbine engine (GTE) blades

Billets for gas turbine engine (GTE) blades


Single crystal billets for gas turbine engine blades on Ni basis


Billets are produced from single crystal alloys on Ni-W basis and single crystals of heat-resistant Ni super-alloys. The billet is formed due to the process of high-gradient direct crystallization. That makes it possible to obtain homogeneous high-dispersed billet’s microstructure which is oriented along the heat-sink direction.

Perfect single crystal microstructure of Ni super-alloys can be plastically deformed at high temperatures and a nanostructure is formed under certain conditions.

The technology allows to manufacture billets for the whole existing range of operating GTE blades.

Properties of billets material:

  • Parameter of dendrite cell λ:
    cast state – 120…180 mcm;
    after extrusion – 60…90 mcm.
  • morphology of the strengthening γ'-phase:
    cast state – cuboidal particles of 0.3…0.6 mcm in size;
    after plastic deformation – cuboidal or globular particles of 0.05…0.2 mcm in size.
  • durability σUTS300К~ 150kg/mm2;
  • elongated heat resistance is increased 1.5…2 times.

Main Advantages

  • Increase in operating resource
  • Improvement of durability properties
  • Improvement of elongated heat resistance
  • Better stability in connection of blades with protective coating

Areas of Application

Manufacture of some parts for GTE operating at high temperatures, under mechanical loadings and corrosion impact:

  • Aerospace technology
  • Nuclear power
  • Shipbuilding
  • Power engineering

Fig. 1

Fig. 2

Stage of Development

Promotion to the market (commercialization).
– statements of industrial testing

Contact Details

National Science Center “Kharkov Institute of Physics and Technology”
«TIDIS» - Department of technology transfer, innovation activity and intellectual property
Address: 1, Akademicheskaya Str., Kharkov 61108,Ukraine
Contact: Pugach Sergii Grygorovych
Tel/fax: +38 (057) 335-18-89
e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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