Relationship of Corrosion Behavior Between Single-Phase Equiatomic CoCrNi, CoCrNiFe, CoCrNiFeMn Alloys and Their Constituents in NaCl Solution

Wang, D. P.; Shen, Jiabing; Chen, Z.; Chen, F. G.; Guo, Pingyi; Geng, Y. X.; Wang, Y. X.

doi:10.1007/s40195-021-01281-7

Cited by 14 publications

(3 citation statements)

References 59 publications

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“…The high-resolution XPS spectra of Cr 2p of the wear tracks under different conditions are shown in Figure 8. The BE of Cr 3+ (2p3/2) in Cr2O3 was 576.4 eV [41], and a peak at 2.6 eV lower than the Cr 3+ (2p3/2) peak was observed, which was attributed to the BE of metallic Cr 0 [42,43]. FeCr2O4 with a BE of 577.9 eV could also be detected at 300 °C [38].…”

Section: Microstructure Characteristics Of the Wear Tracksmentioning

confidence: 87%

Friction and Wear Behaviors of Fe-19Cr-15Mn-0.66N Steel at High Temperature

et al. 2021

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The friction and wear behaviors of Fe-19Cr-15Mn-0.66N steel were investigated under applied loads of 5 N and 15 N at the wear-testing temperatures of 300 °C and 500 °C using a ball-on-disc tribometer. The wear tracks were evaluated by scanning electron microscopy (SEM) and laser scanning confocal microscopy (LSCM) to reveal the variation in morphologies. Energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) were used to determine the components of oxide layers formed on wear surfaces. The results demonstrated that the oxide layers are favorable for obtaining a low friction coefficient under all conditions. The average friction coefficient decreased with increasing load at 300 °C, while it increased with the increase in applied load at 500 °C. At 300 °C, severe abrasive wear characterized by grooves resulted in a high friction coefficient with 5 N applied, whereas the formation of a denser oxide layer consisting of Cr2O3, FeCr2O4, Fe2O3, etc., and the increased hardness caused by work hardening led to a decrease in friction characterized by mild adhesive wear. At 500 °C, the transformation of Fe2O3 to the relatively softer Fe3O4 and the high production of lubricating Mn2O3 resulted in a minimum average friction coefficient (0.34) when 5 N was applied. However, the softening caused by high temperature weakened the hardening effect, and thus the friction coefficient increased with 15 N applied at 500 °C.

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Section: Microstructure Characteristics Of the Wear Tracksmentioning

confidence: 87%

Friction and Wear Behaviors of Fe-19Cr-15Mn-0.66N Steel at High Temperature

et al. 2021

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“…Alghannam et al investigated the mechanical properties and corrosion resistance of Timodified A5083 Al alloy for aerospace and automotive applications [21]. Wang et al investigated the corrosion behavior of CoCrNi, CoCrNiFe, and CoCrNiFeMn alloys and their compositions in NaCl solution [22].…”

Section: Introductionmentioning

confidence: 99%

Mechanical characteristics and electrochemical corrosion of NiCoCr alloys

Lu,

Bui,

Fang

2024

Phys. Scr.

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Previous studies have shown that NiCoCr medium entropy alloys (MEAs) have perfect strength-ductility balance and significant escape fracture toughness. This work aimed to determine the effects of annealing temperature and alloy composition on the mechanical characteristics and corrosion behaviors of the NiCoCr MEAs. The results showed that the grains generated in the NiCoCr MEAs became more petite with the cooling rate increasing. The Vickers hardness (HV) of annealed NiCoCr MEAs increased with increasing annealing temperature. For NiCoCr alloys with different alloy compositions, the potentiodynamic polarization results showed that the NiCoCrFeMn alloy has the highest polarisation resistance, lowest current density, and lowest corrosion rate. However, the composition of Fe2O3-based passivation film makes it highly reactive and easily cleaved by Cl-. The NiCoCr and NiCoCrFe MEAs with high Ni content had a denser and slowly dissolved NiO passivation layer and better corrosion resistance. Moreover, the hardness of corroded NiCoCr MEAs decreased by 7.7 %.

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“…The high entropy alloy consists of five or more main elements and the content of each element ranges from 5% to 35%, which breaks the traditional alloy designation concept, and proposes a new idea for alloy designation [1][2][3] . The unique composition characteristics of high entropy alloys result in high strength and toughness, excellent wear resistance and corrosion resistance, which can be used in aerospace, automobile, and petrochemical fields.…”

Section: Introductionmentioning

confidence: 99%

As-cast microstructure and properties of non-equal atomic ratio TiZrTaNbSn high-entropy alloys

Jin

et al. 2022

China Foundry

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High entropy alloys have been proved to be potential candidate materials in the biomedical field due to their balanced mechanical properties and excellent biocompatibility. The effects of atomic ratios on the as-cast microstructural evolution, mechanical properties, and electrochemical property of TiZrTaNbSn high entropy alloys were studied systematically. The crystal structure of TiZrTaNbSn high entropy alloys is single BCC phase, and the microstructural evolution is based on atomic ratio. The dendric structure, peritectic structure, pseudo eutectic and equiaxed grain, which are associated with element segregation, can be obtained by non-equal atomic ratio. Ti30Zr20Ta20Nb20Sn10 alloy demonstrates a high compressive strength and fracture strain, which are 2,571.8 MPa and 12%, respectively, and the fracture behavior is quasi-cleavage faults. The Ti45Zr35Ta5Nb5Sn10, Ti30Zr20Ta20Nb20Sn10 and Ti35Zr25Ta15Nb15Sn10 alloys show excellent corrosion resistance according to Nyquist diagram, polarization curves and corrosion morphology. Compared with TiZrTaNbSn alloy, the corrosion rate of Ti45Zr35Ta5Nb5Sn10 alloy increases by about 98.9%. It can be concluded that non-equal atomic ratios are effective for microstructure control and performance optimization.

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Relationship of Corrosion Behavior Between Single-Phase Equiatomic CoCrNi, CoCrNiFe, CoCrNiFeMn Alloys and Their Constituents in NaCl Solution

Cited by 14 publications

References 59 publications

Friction and Wear Behaviors of Fe-19Cr-15Mn-0.66N Steel at High Temperature

Friction and Wear Behaviors of Fe-19Cr-15Mn-0.66N Steel at High Temperature

Mechanical characteristics and electrochemical corrosion of NiCoCr alloys

As-cast microstructure and properties of non-equal atomic ratio TiZrTaNbSn high-entropy alloys

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