FIELD: metallurgy.
SUBSTANCE: heat treatment method of castings from alloys based on gamma titanium aluminide involves hot isostatic pressing, cooling to room temperature and further heating at temperature below eutectoid alloy conversion. Hot isostatic pressing is performed at the temperature above eutectoid alloy conversion in α+β+γ phase area at the following number of phases in alloy, wt %: beta phase (β) 7 to 18, gamma phase (γ) 5 to 16, and alpha phase (α) is the rest.
EFFECT: shortening the time required for heat treatment; with that, alloys have high level of mechanical properties.
2 cl, 2 dwg, 1 tbl, 1 ex
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