For investigating the corrosion behavior and performance changes of bending deformation stainless steel composite pipes in boiler al-kali salt environment,the corrosion behavior of 304L stainless steel in 300 ℃ sulfur-containing alkali salt environment was studied through an-alyzing the material structure,morphology and composition of corrosion products,and the influence of bending deformation on the corrosion performance of 304L stainless steel was emphatically researched.Results showed that after 48 h of testing in alkaline salt environment,the sur-face corrosion of 304L stainless steel was relatively mild and uneven,and the main corrosion products were Fe2O3,FeCr2O4 and FeOOH,indi-cating that the corrosion primarily occurred on iron and chromium elements.Bent deformation of 304L stainless steel resulted in a higher corro-sion rate and thicker corrosion products,mainly due to the significant deformation of small grains and an increase in dislocations and twinning caused by bending deformation.
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