Effect of Hot Deformation Process Parameters on Microstructure and Corrosion Behavior of 35CrMoV Steel

Yang, Qiu-Mei; Zhou, Yajun; Li, Zheng; Mao, Daheng

doi:10.3390/ma12091455

Cited by 17 publications

(13 citation statements)

References 58 publications

(67 reference statements)

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“…The impedance magnitude reflects the charge transfer ability of the sample surface. The higher impedance magnitude indicates that the electrode reaction is slower and the corrosion resistance is larger [ 42 , 43 , 44 ]. As shown in Figure 2 b, the impedance magnitude increases with the extended aging time at a low frequency, showing that the corrosion resistance of the alloy is improved.…”

Section: Resultsmentioning

confidence: 99%

Effects of Aging Treatment on Corrosion Behavior of a Tensile Deformed Al-Cu-Mn-Fe-Zr Alloy in 3.5% NaCl Solution

et al. 2021

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In this paper, the effects of an aging treatment on the corrosion resistance/mechanism of a tensile deformed Al-Cu-Mn-Fe-Zr alloy are investigated. The impedance magnitude and polarization resistance increase, while the corrosion current decreases with the increased aging time and temperature. The discontinuously-distributed precipitates and precipitation-free zone, which can cut the corrosion channels, appear at grain boundaries when the temperature is relatively high and the aging time is relatively long. They can improve the corrosion resistance. Additionally, the intergranular and pitting corrosion are the main mechanisms. The intergranular corrosion is likely to occur in an under-aged alloy. This is because the potential difference between the grain boundaries and grains is high, due to the segregation of Cu atoms. When the aging degree is increased, the grain boundary precipitates reduce the potential difference, and the intragranular precipitates make the surrounding matrix prone to dissolution. As such, the pitting corrosion is likely to occur in the over-aged alloys.

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Section: Resultsmentioning

confidence: 99%

Effects of Aging Treatment on Corrosion Behavior of a Tensile Deformed Al-Cu-Mn-Fe-Zr Alloy in 3.5% NaCl Solution

et al. 2021

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“…It is for that larger strain rates accelerate the deformation and make more strain storage-energy generate quickly, which makes the DRX nucleation rate higher. Moreover, the DRX grain does not possess enough time to grow in the case of high strain rate [31][32][33].…”

Section: Microstructure Evolutionmentioning

confidence: 99%

Deformation Behavior and Evolution of Austenite Microstructure and Texture During Hot Compression of 5CrNiMoV Steel

Wang

Yang³

2020

Metallogr. Microstruct. Anal.

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Deformation behaviour of 5CrNiMoV steel was investigated at temperature 830-1230 °C and strain rate 0.001-10 s −1 . The flow curves were analyzed to illuminate the deformation characteristics. Comprehensive austenite microstructural investigation was carried out using optical microscope for deformed samples. It was found that discontinuous dynamic recrystallization mechanism played a leading part in the nucleation of dynamic recrystallization (DRX) nuclei and growth of DRX grains, and that the austenite grain size increased with deformation temperature, while a larger strain rate was conducive to grain refinement for the quickly generated strain storage-energy favorable for higher DRX nucleation rate. The parent austenite texture evolution and typical martensitic transformation texture for some deformed samples were characterized using electron backscattering diffraction technique and the software of the reconstruction of parent austenite. It was found that increasing temperature contributed to the increase of its maximum of random distribution (MRD) and the strength of rotated Cube texture component, which was probably for the behavior DRX and growth of DRX grains during the hot deformation. The rotated Cube was weakened with the strain rate rising, while the main texture component did not change significantly, which was due to the increase in number of active slip systems and grain fragmentation. Besides, the martensitic transformation texture was related to the parent texture for the variant selection.

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“…A significant effect of stress concentrators on steel corrosion has been established. The general trend of the influence of various defects on the strength of metals is widely studied experimentally and theoretically only for geometrically correct stress concentrators [ 29 , 30 , 31 ].…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Corrosion Fatigue Damages of Rebars under Loading in Time

2021

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Nowadays, a relatively small number of studies concern the study of corrosion processes in reinforced concrete structures under load. Additionally, rather little research has been carried out concerning changes in the stress–strain state parameters of structures under the simultaneous action of aggressive environment and load. This issue requires additional experimental and theoretical investigation. Determination of mechanical properties, fatigue characteristics and susceptibility to corrosion cracking was performed on samples of reinforcing St3GPF steel. The chemical composition of steel was determined by structural analysis. The spectral method for the determination of alloying elements and impurities in steels is based on the excitation of iron atoms and admixtures by electric discharge, decomposition of radiation into a spectrum, followed by its registration on photoplate with the use of electrograph. Experimental tests of samples in an aggressive environment under the action of statically applied tensile force showed that corrosion damage has little effect on the strength characteristics. At the same time, the decrease in area reduction and the decrease in strain were recorded. Additionally, the action of cyclic loads in an aggressive environment leads to a significant reduction in the fatigue limit to values from 20 to 24% of the yield strength of the original samples, which is 2–3 times lower than the fatigue limit of undamaged samples.

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Effect of Hot Deformation Process Parameters on Microstructure and Corrosion Behavior of 35CrMoV Steel

Cited by 17 publications

References 58 publications

Effects of Aging Treatment on Corrosion Behavior of a Tensile Deformed Al-Cu-Mn-Fe-Zr Alloy in 3.5% NaCl Solution

Effects of Aging Treatment on Corrosion Behavior of a Tensile Deformed Al-Cu-Mn-Fe-Zr Alloy in 3.5% NaCl Solution

Deformation Behavior and Evolution of Austenite Microstructure and Texture During Hot Compression of 5CrNiMoV Steel

Corrosion Fatigue Damages of Rebars under Loading in Time

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