METHOD FOR DETERMINING THE PROPENSITY OF TITANIUM ALLOY WORKPIECES TO HYDROGEN EMBRITTLEMENT Russian patent published in 2023 - IPC C22F1/18 G01N19/08 G01N33/2025 

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 for determining the propensity of workpieces made of titanium alloys by the actual content of atomic hydrogen in them to hydrogen embrittlement includes heating the workpieces to a temperature T_r < T_h < A_a, exposing to this temperature and cooling to ambient temperature, sampling from workpieces and making samples for studies of the mechanical properties and structure of the metal, reheating to a temperature of 600+ (20÷50°C), exposure to this temperature and cooling to ambient temperature, sampling from workpieces and making samples to study the mechanical properties and structure of the metal, after which a comparative analysis of data on the mechanical properties and structure of the samples after single and double heating is carried out, where T_h is the heating temperature; T_r is the temperature of the beginning of the recrystallization of the alloy; A_a is the temperature of the beginning of the polymorphic transformation of the alloy. The minimum exposure of workpieces to the heating temperature is carried out depending on the cross section of the workpiece until the temperature is completely equalized over its cross section. Reheating and holding at a temperature of 600+(20÷50°C) is carried out in a vacuum oven.

EFFECT: determination of the propensity of workpieces and parts made of titanium alloys to hydrogen embrittlement during their operation in a gas turbine engine is enabled.

3 cl, 2 dwg, 1 tbl