METHOD FOR PRODUCING TITANIUM ALLOY ROUND RODS (OPTIONS) Russian patent published in 2021 - IPC C22F1/18 B21B3/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, in particular to the production of rods of circular cross-section from a titanium alloy. Variants of the method for producing circular rods from titanium alloy are declared. The method includes heating the billets to a temperature below the temperature of the polymorphic transformation of the titanium alloy, deformation of the billets by three-roll helical rolling with direct quenching from rolling (WIP) into the water of the resulting rods and their subsequent aging. The deformation of billets by three-roll helical rolling is carried out in four or five passes, and before the first pass, the billets are heated to a temperature of 850°С, at each pass the billets are rolled with a true logarithmic degree of deformation equal to 0.36-0.78, and the total true the logarithmic deformation in the workpieces is 2.6, the resulting rods are aged at a temperature of 450°С for 5 hours. After the first rolling pass, billets can be cooled for 8-10 seconds, followed by heating to the temperature of the second rolling pass.

EFFECT: rods with high values of mechanical properties and a high endurance limit under high-cycle loading (10⁷ cycles) are obtained.

3 cl, 4 dwg, 1 tbl, 3 ex