Effect of Thermo-Mechanical Processing on the Corrosion Behavior of Fe-30Mn-5Al-0.5C TWIP Steel

被引：8
作者：
Martin, Ulises [1 ]
Ress, Jacob [1 ]
Bosch, Juan [1 ]
Bastidas, David M. [1 ]
机构：
[1] Univ Akron, Natl Ctr Educ & Res Corros & Mat Performance, NCERCAMP UA, Dept Chem Biomol & Corros Engn, 302 E Buchtel Ave, Akron, OH 44325 USA
来源：
APPLIED SCIENCES-BASEL | 2020年 / 10卷 / 24期
关键词：
thermo-mechanical processing; dislocation glide; TWIP steel; corrosion; cyclic potentiodynamic polarization; XPS; FE-MN-AL; STACKING-FAULT ENERGY; INDUCED PLASTICITY STEELS; PASSIVE FILM; TRIP/TWIP STEELS; RESISTANCE; ALLOYS; MECHANISMS; CHLORIDE; GRAIN;
D O I：
10.3390/app10249104
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Electrochemical corrosion of thermo-mechanically processed (TMP) and recrystallized Fe-30Mn-5Al-0.5C twinning-induced plasticity (TWIP) steels containing 30 wt.% Mn was studied in a 1.0 wt.% NaCl electrolyte solution. The alkaline nature of the corrosion products containing manganese oxide (MnO) increases the dissolution kinetics of the TWIP steel in acid media, obtaining Mn2+ cations in solution, and producing the hydrogen evolution reaction (HER). X-ray photoelectron spectroscopy (XPS) surface analysis revealed an increased Al2O3 content of 91% in the passive layer of the recrystallized TWIP steel specimen, while in contrast only a 43% Al2O3 was found on the TMP specimen. Additionally, the chemical composition of the surface oxide layer as well as the TWIP alloy microstructure was analyzed by optical microscopy (OM) and scanning electron microscopy (SEM). The results indicate an enhanced corrosion attack for the TMP high-Mn TWIP steel.
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页码：1 / 11
页数：11
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