Influence of Fe addition on microstructure and properties of Cu-Ag composite

Zuo, Xiaowei; Zhu, Jianxin; An, Bailing; Han, Ke; Li, Rui; Wang, Engang

doi:10.1007/s12540-017-6656-2

Cited by 15 publications

(7 citation statements)

References 69 publications

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“…It is common knowledge that the alloy elements dissolving in or reacting with the matrix could reduce the conductivity of the matrix. So the element that is mutually insoluble or slightly soluble with copper in the solid state has a uniquely high combination of mechanical properties, electric conductivity, and thermal conductivity, such as Fe [10], Ag [11,12], and Nb [13] etc. Among them, the Cu–Nb system has the best combination of properties.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Enhanced Properties of Copper-Vanadium Nanocomposites Obtained by Powder Metallurgy

Wang

Zou

et al. 2019

Materials

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Cu-2.4 wt.%V nanocomposite has been prepared by mechanical alloy and vacuum hot-pressed sintering technology. The composites were sintered at 800 °C, 850 °C, 900 °C, and 950 °C respectively. The microstructure and properties of composites were investigated. The results show that the Cu-2.4 wt.%V composite presents high strength and high electrical conductivity. The composite sintered at 900 °C has a microhardness of 205 HV, a yield strength of 404.41 MPa, and an electrical conductivity of 79.5% International Annealed Copper Standard (IACS); the microhardness and yield strength reduce gradually with the increasing consolidation temperature, which is mainly due to the growth of copper grain size. After sintering, copper grain size and V nanoparticle both maintain in nanoscale; the strengthening mechanism is related to grain boundary strengthening and dispersion strengthening, while the grain boundary strengthening mechanism plays the most important role. This study indicates that the addition of small amounts of V element could enhance the copper matrix markedly with the little sacrifice of electrical conductivity.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Enhanced Properties of Copper-Vanadium Nanocomposites Obtained by Powder Metallurgy

Wang

Zou

et al. 2019

Materials

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“…It is noteworthy that a lot of reports show the precipitation process in the solid matrix of dilute copper alloy, e.g. Cu-Fe [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30], Cu-Nb [31] and Cu-Ag [32][33][34][35][36], induced by thermal-aging or/and plastic deformation. Here, iron-rich precipitates observed in Figure 1 may form in the supersaturated solid matrix after solidification during the cooling process, i.e.…”

Section: Experimental Methods and Resultsmentioning

confidence: 99%

Precipitates-interaction capture of nano-sized iron-rich precipitates during copper solidification

Chen

Wang

2019

Materials Science and Technology

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Nano-sized iron-rich precipitates reinforced copper alloys achieve excellent mechanical properties. Capture mechanism of iron-rich precipitates into copper grains during solidification was described but needs further validation. Here, Cu-1.5Fe-0.5Co (wt-%) alloy is fabricated by gravity casting. Iron-rich precipitates in nano and submicron scale (mostly < 100 nm) are well dispersed in copper grain interior. Traditional pushing/engulfment transition (PET) models are used to interpret the capture process of iron-rich precipitates during copper solidification, but all fail to match the experimental results. The precipitates-interaction capture mechanism is most reasonable for describing the capture process.

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“…Cu-based composites combine high strength with high conductivity, which makes them promising materials for electrical devices in which large electromagnetic and mechanical forces are exerted, particularly, for windings of high-field pulsed magnets [1,2]. In most cases, transition BCC metals with extremely low solubility in Cu (Nb, Fe, Cr, and V) or FCC Ag are used as additions to the copper matrix [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Features in Multicore Cu–Nb Composites

et al. 2021

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The study is devoted to heavily drawn multicore Cu–18Nb composites of cylindrical and rectangular shapes. The composites were fabricated by the melt-and-deform method, namely, 600 in situ rods of Cu–18%Nb alloy were assembled in a copper shell and cold-drawn to a diameter of 15.4 mm (e = 10.2) and then rolled into a rectangular shape the size of 3 × 5.8 mm (e = 12.5). The specimens were analyzed from the viewpoints of their microstructure, microhardness, and thermal stability. The methods of SEM, TEM, X-ray analysis, and microhardness measurements were applied. It is demonstrated that, at higher strain, the fiber texture 110Nb∥ 111Cu∥ DD (drawing direction), characteristic of this material, becomes sharper. The distortions of niobium lattice can be observed, namely, the 110 Nb interplanar distance is broadened in longitudinal direction of specimens and compacted in transverse sections. The copper matrix lattice is distorted as well, though its distortions are much less pronounced due to its recrystallization. Evolution of microstructure under annealing consists mainly in the coagulation of ribbon-like Nb filaments and in the vanishing of lattice distortions. The structural changes in Nb filaments start at 300–400 °C, then develop actively at 600 °C and cause considerable decrease of strength at 700–800 °C.

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Influence of Fe addition on microstructure and properties of Cu-Ag composite

Cited by 15 publications

References 69 publications

Microstructure and Enhanced Properties of Copper-Vanadium Nanocomposites Obtained by Powder Metallurgy

Microstructure and Enhanced Properties of Copper-Vanadium Nanocomposites Obtained by Powder Metallurgy

Precipitates-interaction capture of nano-sized iron-rich precipitates during copper solidification

Microstructural Features in Multicore Cu–Nb Composites

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