Mn content optimum on microstructures and mechanical behavior of Fe-based medium entropy alloys

Zhao, Yuhong; Ma, Huwen; Zhang, Linhao; Dong, Zhang; Kou, Shengzhong; Wang, Bo; Li, Wensheng; Liaw, Peter K.

doi:10.1016/j.matdes.2022.111241

Cited by 8 publications

(2 citation statements)

References 48 publications

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“…Furthermore, the complexity of the electrolyte solution and the different combinations of deposition parameters also make it a difficult task to successfully deposit the MCA coatings, and the thickness of the MCA coatings is usually around a few microns [43,44]. In addition, there are a limited number of studies on electrodeposited MCAs, compared to traditional fabrication methods [45,46], and it is widely believed that the current intensity would greatly affect the microstructures and properties of electro-deposited coatings. In the present study, because of its anticorrosion and magnetic properties, a NiFeCoCu MCA was selected as a model system for its potential applications in functional materials and devices [47,48].…”

Section: Introductionmentioning

confidence: 99%

Effect of Additive and Current Density on Microstructures and Corrosion Behavior of a Multi-Component NiFeCoCu Alloy Prepared by Electrodeposition

Wang,

Ma,

et al. 2024

Crystals

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High-entropy alloys (HEAs) have been attracting growing interest for decades due to their unique properties. Electrodeposition provides a low-cost and convenient route for producing classified types of HEAs, compared to other synthesis techniques, making it an attention-grabbing method. However, fabricating high-quality HEAs through electrodeposition in aqueous electrolytes remains a great challenge. In this study, the effects of additives and current densities on the compositions, surface morphologies, microstructures, and corrosion behavior of the electrodeposited NiFeCoCu alloy are studied. The results indicate that saccharin plays a key role in achieving a flat and bright surface for NiFeCoCu coatings, while also relieving the internal stress and improving anti-corrosion properties. Electrodeposition under a current density of 20–40 mA/cm2 results in a uniform and dense deposit with favorable properties. The present work provides a low-cost and feasible industrial solution for the preparation of HEA coatings, which holds great potential for innovation in the field of HEA coatings through electrodeposition.

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Section: Introductionmentioning

confidence: 99%

Effect of Additive and Current Density on Microstructures and Corrosion Behavior of a Multi-Component NiFeCoCu Alloy Prepared by Electrodeposition

Wang,

Ma,

et al. 2024

Crystals

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“…A single-phase medium-entropy alloy has a stable solid solution structure, which avoids the formation of micro-galvanic cells between different phases and has good corrosion resistance. However, the corrosion behavior of a dual-FCC phase medium entropy alloy, Materials 2023, 16, 3243 2 of 13 which was demonstrated to improve the mechanical behavior and other functional properties such as the antibacterial paramagnetic properties, is rarely studied [7][8][9]. When Ti, Cr, Ni, Co, Mn, Cu, Ag, and other elements exist in the entropy alloy, they first form a dense oxide film on the surface, which effectively prevents corrosion while increasing the alloy's potential [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cu and Ag Elements on Corrosion Resistance of Dual-Phase Fe-Based Medium-Entropy Alloys

Zhao

et al. 2023

Materials

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The effect of adding elements to promote phase separation on the functional properties of medium-entropy alloys has rarely been reported. In this paper, medium-entropy alloys with dual FCC phases were prepared by adding Cu and Ag elements, which exhibited a positive mixing enthalpy with Fe. Dual-phase Fe-based medium-entropy alloys were fabricated via water-cooled copper crucible magnetic levitation melting and copper mold suction casting. The effects of Cu and Ag elements microalloying on the microstructure and corrosion resistance of a medium-entropy alloy were studied, and an optimal composition was defined. The results show that Cu and Ag elements were enriched between the dendrites and precipitated an FCC2 phase on the FCC1 matrix. During electrochemical corrosion under PBS solutions, Cu and Ag elements formed an oxide layer on the alloy’s surface, which prevented the matrix atoms from diffusing. With an increase in Cu and Ag content, the corrosion potential and the arc radius of capacitive resistance increased, while the corrosion current density decreased, indicating that corrosion resistance improved. The corrosion current density of (Fe63.3Mn14Si9.1Cr9.8C3.8)94Cu3Ag3 in PBS solution was as high as 1.357 × 10−8 A·cm−2.

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Achieving strength–ductility synergy in novel paramagnetic Fe-based medium-entropy alloys through deep cryogenic deformation

Ma,

Zhao,

Feng

et al. 2024

Rare Met.

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Mn content optimum on microstructures and mechanical behavior of Fe-based medium entropy alloys

Cited by 8 publications

References 48 publications

Effect of Additive and Current Density on Microstructures and Corrosion Behavior of a Multi-Component NiFeCoCu Alloy Prepared by Electrodeposition

Effect of Additive and Current Density on Microstructures and Corrosion Behavior of a Multi-Component NiFeCoCu Alloy Prepared by Electrodeposition

Effects of Cu and Ag Elements on Corrosion Resistance of Dual-Phase Fe-Based Medium-Entropy Alloys

Achieving strength–ductility synergy in novel paramagnetic Fe-based medium-entropy alloys through deep cryogenic deformation

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