METHOD FOR ANTI-HYDROGEN HEAT TREATMENT OF BLANKS FROM TITANIUM ALLOYS Russian patent published in 2023 - IPC C22F1/18 

FIELD: heat treatment of metals.

SUBSTANCE: invention is related heat treatment of titanium alloy blanks and can be used in the aviation and engineering industries in production of high-quality products for critical purposes, including for gas turbine engines (GTE). The method of anti-hydrogen heat treatment of blanks from titanium alloys includes heating blanks to a temperature of 1000-600°C, exposure at this temperature and cooling to ambient temperature. This heat treatment is carried out twice, first in an open atmosphere oven and then in a vacuum oven. In an open atmosphere furnace, the workpieces are exposed to the heating temperature until a stable white layer of scale from titanium dioxide (TiO₂) is formed on the entire surface of the workpiece. In a vacuum furnace, the workpieces are exposed to the heating temperature until a stable dark purple-black layer of scale from titanium sesquioxide (Ti₂O₃) is formed on the entire surface of the workpiece.

EFFECT: invention is effective for removing atomic hydrogen from workpieces of medium and large cross-sections and preventing hydrogen brittleness of parts made of titanium alloys during their operation in gas turbine engines.

3 cl, 2 tbl, 2 ex