Abstract
The immersion corrosion test of ferritic stainless steel with different titanium content was carried out in molten aluminum at 750 °C. Scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) were used to observe the microstructure and basic morphology of ferritic stainless steel with different titanium content, and the corrosion cross-section morphology after corrosion was observed. The types and contents of carbides in steel were analyzed by electrolytic extraction device and X-ray diffractometer (XRD), and the influence mechanism of Ti element on the corrosion resistance of experimental steel was studied. The test results show that the corrosion resistance of the test steel is significantly improved by adding 0.8%Ti. At this time, the microstructure of the test steel is ferrite matrix and carbides dispersed in the grain, including TiC, TiN and Cr23C6. Carbide dispersed in the grain and Fe–Ti intermetallic compound formed at the intersection of two intermetallic compound layers (IMC1 and IMC2) during the corrosion of molten aluminum simultaneously hindered the diffusion of Al atoms and improved the corrosion resistance of the tested steel.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
