Microstructure and properties of Cu-10 wt%Fe alloy produced by double melt mixed casting and multi-stage thermomechanical treatment

Wang, Meng; Zhang, Rui; Xiao, Zhu; Gong, Shen; Jiang, Yong; Zhou, Li

doi:10.1016/j.jallcom.2019.153323

Cited by 71 publications

(10 citation statements)

References 33 publications

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“…In summary, the yield strength of the Cu-5Fe and Cu-5Fe-0.15Sn alloys can be predicted by Eq. (17), where σ 0 is the strength of the Cu matrix, which is generally 60 MPa [35]. …”

Section: Discussionmentioning

confidence: 99%

Influences of Sn on Fe phase segregation and properties of Cu-5Fe alloy

Luo

Wang

Yuan³

et al. 2023

Materials Science and Technology

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The Cu-5Fe-xSn alloy was prepared, and the effect of Sn on Fe phase distribution, precipitation kinetics, and properties of the Cu-5Fe alloy were investigated. The tensile strength and conductivity of Cu-5Fe-0.15Sn after aging at 400°C were 712 MPa and 66.6% IACS, respectively. Compared to the Cu-5Fe alloy, the tensile strength increased by about 190 MPa, while the conductivity decreased by only 1.4% IACS. Sn optimises Fe distribution and inhibits dendritic segregation. After drawing, the Fe phase is transformed into Fe fibre. Sn enhances the synergistic deformation ability of Cu/Fe, resulting in better continuity and density of Fe fibres. The precipitation activation energies of Fe in Cu-5Fe and Cu-5Fe-0.15Sn alloys were 95.9 and 84.9 kJ/mol, respectively. HIGHLIGHTS The addition of Sn significantly improves the mechanical properties of Cu-5Fe alloy. Sn addition optimised the primary Fe phase distribution and increased the Fe fibre density. The addition of Sn reduces the ultimate solid solubility of Fe in Cu and promotes the nucleation of γ-Fe phase. Sn reduces the activation energy of Fe phase and promotes the precipitation of Fe phase.

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“…In summary, the yield strength of the Cu-5Fe and Cu-5Fe-0.15Sn alloys can be predicted by Eq. (17), where σ 0 is the strength of the Cu matrix, which is generally 60 MPa [35]. …”

Section: Discussionmentioning

confidence: 99%

Influences of Sn on Fe phase segregation and properties of Cu-5Fe alloy

Luo

Wang

Yuan³

et al. 2023

Materials Science and Technology

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“…In addition, the plastic flow behavior of Fe is similar to that of Cu; therefore, Cu-Fe alloys can be plastically deformed to high strain levels at room temperature [4,5]. Accordingly, Cu-Fe alloys are widely used in industrial fields [6][7][8][9]. The industrial applications of Cu-Fe wire are mainly in the electronics, electrical, and communication fields, such as wires and cables, where the focus is on strength and conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…Many attempts have been made to improve the mechanical performance of Cu-Fe alloys by refining the grain size (i.e., grain boundary strengthening) [14,15], work hardening effect [16,17], and aging treatment (i.e., precipitation strengthening) [8,16]. In addition to the above methods, reducing the size of the Fe phase is another effective strategy to improve the comprehensive performance of Cu-Fe alloys.…”

Section: Introductionmentioning

confidence: 99%

Influences of Fe Content and Cold Drawing Strain on the Microstructure and Properties of Powder Metallurgy Cu-Fe Alloy Wire

et al. 2023

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To study the effects of Fe content and cold drawing strain on the microstructure and properties, Cu-Fe alloys were prepared via powder metallurgy and hot extrusion. Scanning electron microscopy was applied to observe the Fe phase, and the ultimate tensile strength was investigated using a universal material testing machine. Alloying with an Fe content below 10 wt.% formed a spherically dispersed Fe phase via the conventional nucleation and growth mechanism, whereas a higher Fe content formed a water-droplet-like Fe phase via the spinodal decomposition mechanism in the as-extruded Cu-Fe alloy. Further cold drawing induced the fiber structure of the Fe phase (fiber strengthening), which could not be destroyed by subsequent annealing. As the Fe content increased, the strength increased but the electrical conductivity decreased; as the cold drawing strain increased, both the strength and the electrical conductivity roughly increased, but the elongation roughly decreased. After thermal–mechanical processing, the electrical conductivity and strength of the Cu-40Fe alloy could reach 51% IACS and 1.14 GPa, respectively. This study can provide insight into the design of high-performance Cu-Fe alloys by tailoring the size and morphology of the Fe phase.

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“…The reason for this is because such alloys have a low thermal expansion coefficient and are highly durable and strong [25]. A number of studies have been conducted on Cu-Fe alloys at different solidification rates and microstructure evolutions, such as liquid separation [26], mechanical alloying [27], spray deposition [28], double-melt mixed casting [29], and powder metallurgy (PM) [30], for the purpose of fabricating ideal alloys.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Lubricant Type on the Densification Behavior and Final Powder Compact Properties of Cu–Fe Alloy under Different Compaction Pressures

Korim

Elsayed

2022

Materials

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A Cu–15Fe alloy was fabricated using a powder metallurgy (PM) route, with the addition of different solid lubricants (i.e., paraffin wax (PW) and stearic acid (SA) as well as their composites (PW+SA)). Green compacts were produced via cold compaction at different pressure levels of 50 MPa, 200 MPa, and 350 MPa, then sintered for 60 min under vacuum at 1050 °C. The systematic evolution of the densification, porosity, and pore-size behavior were studied. Vickers Hardness Tests were used to measure hardness. The analysis of the morphological alterations was performed using scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. Moreover, under dry sliding conditions, pin-on-disk wear tests were conducted in order to determine tribological properties such as the coefficient of friction (µ), specific wear rate (K), and friction temperature gain. Results revealed that the lubrication process and compaction pressure play a crucial role in defining the characteristics of the final compact. Higher sintered densities and hardnesses were achieved at 50 MPa when PW was used as a solid lubricant, and became reduced as the compaction pressure increased. In contrast, in the case of SA, higher sintered densities and hardnesses were obtained at a compaction pressure of 350 MPa, and increased with increasing pressure. Moreover, PW samples exhibited lower coefficients of friction and wear properties. The addition of SA improves the wear loss of friction materials as well as their coefficients of friction. Compared to blank and PW samples, SA samples show a nearly 50% reduction in wear rate.

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Microstructure and properties of Cu-10 wt%Fe alloy produced by double melt mixed casting and multi-stage thermomechanical treatment

Cited by 71 publications

References 33 publications

Influences of Sn on Fe phase segregation and properties of Cu-5Fe alloy

Influences of Sn on Fe phase segregation and properties of Cu-5Fe alloy

Influences of Fe Content and Cold Drawing Strain on the Microstructure and Properties of Powder Metallurgy Cu-Fe Alloy Wire

Impacts of Lubricant Type on the Densification Behavior and Final Powder Compact Properties of Cu–Fe Alloy under Different Compaction Pressures

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