<p>The synergistic effects of irradiation and tensile deformation on the corrosion behavior of the GH3535 alloy in FLi-NaK molten salt were explored. Helium bubbles were introduced into the GH3535 alloy, followed by mechanical loading with the plastic strain up to 10%. After immersion in molten salt for 300&#xa0;h, all the samples exhibited a corrosion-induced Cr depletion layer. The depth of the Cr depletion layer increased by 40% for the alloy with helium ion irradiation and 10% plastic deformation, compared with that for the only corroded sample. Moreover, the proportion of large-sized helium bubbles increased with plastic deformation. These results indicate that the coupling effects of irradiation and tensile deformation accelerate the corrosion of the GH3535 alloy. In addition, in a molten salt environment, an unexpected outward migration behavior of helium bubbles was observed under different plastic deformation. Helium bubbles migrated closer to the surface as the strain increased up to 3%, while the migration depth declined when the strain reached 10%. This is ascribed to the interaction between deformation-induced dislocations and helium bubbles.</p>