METHOD OF THERMAL TREATMENT OF CAST SLABS FROM HYPEREUTECTIC INTERMETALLIDE ALLOYS BASED ON PHASES γ-TiAl+α-TiAl Russian patent published in 2014 - IPC C22F1/18 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy. proposed method of treatment of said allows completely hardening in β-phase containing alloying elements, at least, boron and elements stabilising β-phase comprises cooling the blanks from temperatures of β-phase region. Blanks are cooled immediately after gardening or after heating and curing at temperatures of β-phase region. Note here that blanks are cooled to temperatures of (α+γ)- or (α+β+γ)-phase depending on size in air or in air in container to form thermodynamically nonequilibrium structure but at the rate smaller than that of cooling at tempering of alloy selected composition. The, blanks are cooled from temperatures of (α+γ)- or (α+β+γ)-phase region to room temperature together with the furnace or cooled in air with subsequent annealing at temperatures of (α+γ)- or (α+β-γ)-phase region and cooling after annealing together with the furnace.

EFFECT: higher performances and processing ductility.

5 cl, 5 dwg, 7 tbl, 3 ex