期刊
CORROSION SCIENCE
卷 178, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.109043
关键词
Multiphase steel; Potentiodynamic polarization; Immersion test; Corrosion; Rust
资金
- Imprint, India [MHRD/MET/2016408J]
The work discusses the corrosion behavior of newly developed high strength and highly ductile multi-phase steels made up of various fractions of different structures, and found that multiphase interaction and rust constituents play a key role in corrosion, with corrosion rate initially increasing with continuous cooling time and then decreasing once pearlite appears.
The work discusses the corrosion behavior of a set of newly developed high strength and highly ductile multi-phase steels consisting of various fractions of bainite, intercritical ferrite, retained austenite and pearlite from the composition 0.67 % C, 1.71 % Si, 0.86 % Mn and 96.69 % Fe (wt.%). The steels were made by various combinations of continuous cooling in the ferrite-pearlite zone followed by austempering. Multiphase interaction and rust constituents uniquely control the corrosion of the steels. At a particular isothermal temperature, initial increase in corrosion rate with increment of continuous cooling time is followed by decrease in corrosion rate once pearlite starts appearing.
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