Heat treatment method for reducing excitation stress of TB6 titanium alloy stress-induced martensite phase transformation to below 320 MPa

The invention discloses a heat treatment method for reducing the excitation stress of TB6 titanium alloy stress induced martensite phase transformation to below 320MPa, which comprises the following steps: firstly, heating a heat treatment furnace to 25-45 DEG C below the beta transformation point of a TB6 titanium alloy material, and then putting the TB6 titanium alloy material into a hearth for heat preservation and solid solution heat treatment, and finally, the TB6 titanium alloy material obtained after solid solution heat treatment is taken out of the heat treatment furnace and rapidly put into water for quenching treatment. According to the method, the microstructure and beta-phase components of the TB6 titanium alloy are regulated and controlled through solid solution heat treatment, so that the excitation stress of stress-induced martensite phase transformation of the TB6 titanium alloy is reduced to 320 MPa or below, and an important way is provided for improving the recovery strain and the shape mem