Research Progress of Corrosion Induced by Second-Phase Particles in Microalloyed High-Strength Rebars—Review
Abstract
:1. Introduction
2. The Role of Second-Phase Particles in Corrosion
2.1. The Role of Aluminum Oxides in Corrosion
2.1.1. The Role of Al2O3 Inclusions in Corrosion
2.1.2. Effect of Rare-Earth-Modified Al2O3 Inclusions in Corrosion
2.2. The Role of Carbonitride Precipitates in Corrosion
2.2.1. The Role of Carbide Precipitation in Corrosion
2.2.2. The Role of Nitride Precipitation in Corrosion
2.3. The Role of Sulfide Inclusions in Corrosion
2.3.1. The Role of CaS Inclusions in Corrosion
2.3.2. The Role of MnS Inclusions in Corrosion
3. Conclusions
- (1)
- At present, there are three main ways of local corrosion of microalloyed high-strength rebars caused by second-phase particles: pitting corrosion, crevice corrosion, and stress corrosion.
- (2)
- The research progressed on corrosion induced by Al2O3, (RE)-AlO3, CaS, MnS, carbonitride, and other second phase particles in microalloyed high-strength rebars is mainly expounded. The current research shows that sulfide inclusions are harmful to the corrosion resistance of microalloyed, high-strength rebars, and different characteristics of Al2O3 inclusions have different effects on the corrosion resistance of rebars. For this phenomenon, many researchers add alloying elements and rare earth elements to steel to modify inclusions, refine grains, and improve microstructures, so as to improve the corrosion resistance of microalloyed, high-strength rebars.
- (3)
- At present, the main shortcomings of the research on the corrosion induced by the second phase particles are that the researchers start from a single inclusion and the microscopic angle, and the lack of research on the relationship between the number, density, and distribution of inclusions in steel bars and the corrosion resistance of microalloyed, high-strength steel bars.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Corrosion Time/h | Corrosion Rate of Different Steel Samples | |||||
---|---|---|---|---|---|---|
Q235 | 0# | 1# | 2# | 5# | 6# | |
70 | 5.47 | 3.30 | 2.87 | 3.09 | 3.00 | 2.74 |
140 | 3.90 | 2.56 | 2.26 | 2.26 | 2.24 | 2.21 |
240 | 3.31 | 2.21 | 2.02 | 1.89 | 1.76 | 1.88 |
Second-Phase Particles | Can a Galvanic Couple Be Formed? | Corrosive Behavior | Anode or Cathode | Preferential Dissolution Region | Remark | Reference |
---|---|---|---|---|---|---|
Al2O3 | No | Crevice corrosion, Stress corrosion | \ | Interface between inclusion and matrix |
| [13,15,16,21,27,28,37,39] |
Rare earth modified Al2O3 | No | Pitting corrosion | Anode | (RE)2O2S- (RE)xSy | Adding (RE) elements can modify Al2O3 inclusions, effectively control the size, shape, and quantity of Al2O3 inclusions, and improve the corrosion resistance of steel. | [45,48,50,51,52,53] |
Carbide | Yes | Galvanic corrosion | Cathode | Steel matrix | Adding an appropriate amount of Nb, V, Ti can:
| [58,59,60,65] |
Nitride | Yes | Galvanic corrosion | Cathode | Steel matrix | [4,65,66,67] | |
CaS | No | Pitting corrosion | Anode | CaS inclusion | CaS dissolves preferentially, lowering the pH of the pore solution and further promoting corrosion. | [9,12,20,68] |
MnS | No | Pitting corrosion | Anode | MnS inclusion |
| [71,72,75,76,77] |
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Li, S.; Li, C.; Zeng, Z.; Zhuang, C.; Huang, S.; You, J. Research Progress of Corrosion Induced by Second-Phase Particles in Microalloyed High-Strength Rebars—Review. Metals 2022, 12, 925. https://doi.org/10.3390/met12060925
Li S, Li C, Zeng Z, Zhuang C, Huang S, You J. Research Progress of Corrosion Induced by Second-Phase Particles in Microalloyed High-Strength Rebars—Review. Metals. 2022; 12(6):925. https://doi.org/10.3390/met12060925
Chicago/Turabian StyleLi, Shiwang, Changrong Li, Zeyun Zeng, Changling Zhuang, Sheng Huang, and Jingtian You. 2022. "Research Progress of Corrosion Induced by Second-Phase Particles in Microalloyed High-Strength Rebars—Review" Metals 12, no. 6: 925. https://doi.org/10.3390/met12060925