Microstructure and Strengthening Model of Cu–Fe In-Situ Composites

Liu, Keming; Sheng, Xiaochun; Li, Qingpeng; Zhang, Mengcheng; Han, Ningle; He, Guangyu; Zeng, Jin; Chen, Wei; Atrens, Andrej

doi:10.3390/ma13163464

Cited by 18 publications

(4 citation statements)

References 45 publications

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“…2(a). The primary iron dendrites were embedded in the copper matrix with random orientation, which was similar to the previous research results ( Ref 6,7,9). Hot rolling and cold drawing to g = 3 transformed the primary iron dendrites with random orientation into iron fibers and tadpole shaped iron grains parallel to the deformation direction, as shown in Fig.…”

Section: Evolution Of Microstructuresupporting

confidence: 89%

Microstructure and Electrical Resistivity of In Situ Cu-Fe Microcomposites

Liu

Sheng

et al. 2021

J. of Materi Eng and Perform

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This paper studied the electrical resistivity of in situ Cu-Fe microcomposites using theoretical analysis and experiments. The model alloys Cu-XFe (X = 3, 4.3, 11, 14 and 17 wt.%) were produced by casting, and the microcomposites were prepared by thermomechanical treatment. The solid solubility of iron in the copper matrix was measured using an energy dispersive spectrometer. The electrical resistivity and conductivity was evaluated using a micro-ohmmeter. The conductivity of the Cu-XFe (X = 3 and 4.3) was essentially constant at $ 40% IACS. The conductivity of the Cu-XFe (X = 11, 14, 17) microcomposites decreased in a nonlinear manner with increasing iron content and increasing cold deformation strain, which was mainly determined by the interface scattering resistivity caused by the interface between the copper matrix and the iron fibers.

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Section: Evolution Of Microstructuresupporting

confidence: 89%

Microstructure and Electrical Resistivity of In Situ Cu-Fe Microcomposites

Liu

Sheng

et al. 2021

J. of Materi Eng and Perform

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“…Copper matrix composites have a wide range of applications comprising high electrical and thermal conductivities. Cu-Al 2 O 3 composites are mostly used in electrode materials, especially spot welding [24,[29][30][31][32][33]. These composites are ordinarily prepared by conventional powder metallurgy [34] or casting [35] routes.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Activation-Assisted Solid-State Aluminothermic Reduction of CuO Powders for In-Situ Copper Matrix Composite Fabrication

Arasteh

Masoudi

Abbasi

et al. 2022

Metals

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In this study, combustion synthesis involving mechanical milling and subsequent sintering process was utilised to fabricate Cu/AlxCuy/Al2O3 in-situ composite through the aluminothermic reduction of CuO powders. First, CuO and Al powders were mixed, and ball milled for 30–150 min to facilitate self-propagating high-temperature synthesis (SHS). Then, mechanically activated Al-CuO powders were mixed with elemental Cu powders and experienced subsequent cold compaction and sintering processes. The reactions during synthesis were studied utilising differential thermal analysis (DTA), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Densification and hardness of green and sintered bodies were also obtained. The results indicated that despite the negative free energy of the aluminothermic reaction, an initial activation energy supply is required, and mixed Al-CuO powders did not show significant progress in the combustion synthesis method. The aluminothermic reaction became probable whenever the activation energy was entirely provided by high-energy ball milling or by the sintering of ball-milled Al-CuO mixed powders. DTA results showed that the aluminothermic reaction temperature of Al-CuO decreased with milling times, whereas after 150 min of ball milling, the reaction was completed. XRD patterns revealed that the formation of Al2Cu and Al2O3 reinforcing phases resulted from CuO reduction with Al. Al4Cu9, Cu solid solution, and Al oxide phases were observed in sintered samples. The relative density of the samples was reduced compared to the green compacted parts due to the nature of the Cu-Al alloy and the occurrence of the swelling phenomenon. The hardness results indicated that in-situ formation of reinforcing phases in samples that experienced thermally assisted thermite reaction yielded superior hardness.

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“…Therefore, copper matrix composites got a great interest and are developed for many applications like heat exchangers, sensitive electrical circuits, brushes, springs, bearings, and bushing [5][6][7][8]. Among copper matrix composites, Cu-Fe composites got the attention of many researchers because of their low cost, compared with other metals beside their good mechanical properties [9][10][11][12][13][14][15][16]. Jerman, G.A.…”

Section: Introductionmentioning

confidence: 99%

“…They found that corrosion resistance was increased by 75%, wear resistance was increased by 30%. Keming Liu et al [22] studied the effect of Fe content and drawing strain on tensile strength of Cu-Fe composite produced by casting. They found that tensile strength increased with increasing both Fe content and drawing strain.…”

Section: Introductionmentioning

confidence: 99%

Effect of Adding Nano Ag on Mechanical and Physical Properties of Cu–10% Fe Prepared by Powder Metallurgy Technique

Mahdi

Mahmood

2021

Tikrit j. eng. sci.

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Copper-matrix composites have received a lot of attention and are used widely in various applications, such as electronics, machinery, automobile, military and aerospace; because of their remarkable electrical conductivity, high thermal conductivity and excellent mechanical properties. Among these are copper-iron composites which found many engineering applications due to the role of Fe in enhancing the mechanical properties of these composites beside its low cost. However, Fe addition reduces electrical and thermal conductivity therefore, binary Cu-Fe composites are not suitable for applications where these properties are the main requirement. Many studies have been done to enhance these properties by the addition of alloying elements. The present work aims to study the effect of adding Nano Ag on mechanical and physical properties of Cu-10 wt% Fe composites prepared by powder metallurgy technique. The results showed the effectiveness of Nano Ag in enhancing both mechanical and physical properties of Cu-10 wt% Fe composite. It is found that bulk density, electrical conductivity, and thermal conductivity have been increased by 1.19%, 46%, and 46% respectively on adding 5% Nano Ag. Hardness and compression strength have been increased by 17.3% and 32.8% respectively by adding 4% Nano Ag, while wear rate was reduced by 13.4% by adding 4% Nano Ag.

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Microstructure and Strengthening Model of Cu–Fe In-Situ Composites

Cited by 18 publications

References 45 publications

Microstructure and Electrical Resistivity of In Situ Cu-Fe Microcomposites

Microstructure and Electrical Resistivity of In Situ Cu-Fe Microcomposites

Mechanical Activation-Assisted Solid-State Aluminothermic Reduction of CuO Powders for In-Situ Copper Matrix Composite Fabrication

Effect of Adding Nano Ag on Mechanical and Physical Properties of Cu–10% Fe Prepared by Powder Metallurgy Technique

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