Abstract
A method for production of a composite material (CM) hardened by hafnium oxide particles with columnar structure based on VKNA-1B grade alloy is described. The method involves making heat-resistant nickel alloy powders with a particle size ≤100 μm. The obtained powders of the matrix VKNA-1B alloy are dispersed and alloyed mechanically in an attritor with the hardening additive HfO2, and next the semifinished material is extruded with subsequent rolling. The production technique parameters of the CM based on the nickel aluminide–HfO2 system are determined. The developed material is intended for advanced aircraft engines, first of all, parts of a combustor, doors of a controlled nozzle, and nozzle blades of gas turbine engines (GTEs). The physical and mechanical properties and the heat resistance of the composite material obtained are studied.
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