Abstract
When manufacturing components for gas turbine engines from superalloys based on nickel and iron, the superplastic deformation of ultrafine-grained semi-finished products is used. The technology for obtaining such semi-finished products known as the getraising process is carried out in a nonoxidizing atmosphere. The deformation of such semi-finished products under conditions of superplasticity makes it possible to obtain high-quality details. This study substantiates the possibility of using a more economical process, i.e., an intense plastic deformation of superalloys by the method of torsion with uniaxial compression or tension in isothermal air conditions. It is shown that, in this case, the critical load on the tool is significantly reduced, and a one-pass process of deformation accumulation is provided, which is necessary for uniform grinding of grains in the material of large-sized superalloy products.
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Notes
In Russia, these alloys are called heat-resistant alloys.
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Translated by V. Bukhanov
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Utyashev, F.Z., Sukhorukov, R.Y. Mechanics of Intense Plastic Deformation in Grain Grinding Processes in Superalloys. Dokl. Phys. 67, 180–185 (2022). https://doi.org/10.1134/S1028335822060076
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DOI: https://doi.org/10.1134/S1028335822060076