We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effect of Microstructure on Corrosion Resistance of Ultralow‐Carbon Bainitic Steel.
- Authors
Feng, Chun; Wang, Peng; Zhu, Lijuan; Gui, Xiaolu; Li, Zhi; Gao, Guhui
- Abstract
The effect of microstructure on the corrosion behaviors of ultralow‐carbon bainitic (ULCB) steel in 3.5 wt% NaCl solution is discussed. Four ULCB steel specimens with different microstructures are designed via controlling the cooling routes after austenization, namely, furnace cooling (FC), air cooling (AC), oil cooling (OC), and water cooling (WC). Their corrosion behaviors are investigated by alternating immersion test (including weight loss and rust layer observation) and electrochemical tests (including polarization curves and electrochemical impedance spectroscopic measurements). Results show that the corrosion resistance of ULCB steel specimens decreases with increase of cooling rate, that is, in the following sequence: FC > AC > OC > WC. Furthermore, the electron backscatter diffraction characterization and scanning Kelvin probe force microscopy are performed to build the relationship between microstructure and corrosion behaviors of ULCB steels. The reduced corrosion resistance of ULCB steels results from the increased number of microgalvanic couples because of the significantly increased density of grain boundaries with increase of cooling rate.
- Subjects
BAINITIC steel; CORROSION resistance; ELECTROLYTIC corrosion; KELVIN probe force microscopy; COOLING of water; MICROSTRUCTURE
- Publication
Steel Research International, 2024, Vol 95, Issue 5, p1
- ISSN
1611-3683
- Publication type
Article
- DOI
10.1002/srin.202300720