METHOD FOR OBTAINING PRODUCTS OF "BLISK" STRUCTURE FROM HEAT-RESISTANT TITANIUM ALLOYS Russian patent published in 2012 - IPC C22F1/18 

FIELD: metallurgy.

SUBSTANCE: method for obtaining products of "blisk" structure from heat-resistant titanium alloys having blade and disc zones is proposed. Method involves treatment of initial workpiece by deformation in β-zone, cooling, deformation of blade zone in (α+β)-zone and heat treatment of the product. Deformation in β-zone is performed at temperature of T"пп"+(10-30)°C in a closed die by pressing of metal out of disc zone to blade zone with deformation degree of not less than 50% so that shaped workpiece is obtained. Deformation of blade zone in (α+β)-zone is performed with deformation degree of not less than 45%.

EFFECT: obtaining the product of blisk structure with high metal use coefficient; formation in disc zone of the product of plate-type recrystallised microstructure with size of β-grain of 50-150 mcm, and in blade zone - globular plate-type, which provide optimum level of mechanical properties.

2 cl, 1 dwg, 1 tbl, 4 ex