Cu-7Cr-0.1Ag Microcomposites Optimized for High Strength and High Condutivity

Liu, Keming; Wang, Zhenxi; Jiang, Zhengyi; Atrens, Andrej; Huang, Zhi-Kai; Guo, Wei; Zhang, Qizhou; Yu, Jiuming; Lu, Quanguo; Lu, Deping

doi:10.1007/s11665-018-3221-1

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…These observations were consistent with previous work [ 10 , 33 , 37 ], that the mechanisms by which the strains increased the strength of the composites depended on the amount of cold deformation.…”

Section: Resultssupporting

confidence: 93%

“…The increment of strength for the Fe content increase from 11% to 14% was larger than that for the Fe content increase from 14% to 17%, suggesting that there is not a simple linear relationship between the tensile strength of the Cu-Fe in-situ composites and Fe content. These observations were consistent with previous work [10,33,37], that the mechanisms by which the strains increased the strength of the composites depended on the amount of cold deformation. Figure 3 indicates that the average thickness, τ, of the Fe phase decreased with the increasing strain.…”

Section: Cu-fe In-situ Compositessupporting

confidence: 93%

“…The matrix strengthening mechanism of Cu-Fe is mainly the work hardening, solid solution, and precipitation strengthening at low strains. The tensile strength of Cu-Fe using the improved ROM is given by the following: (10) where σ M and f M are the strength and the volume fraction of the Cu matrix containing solid solution atoms and precipitated particles, and σ Fe is the tensile strength of the Fe phase. The tensile strength of the Cu matrix can be calculated by the matrix strengthening effect, ∆σ Fe-M , and the strength of the pure Cu with corresponding strain, σ P , as follows:…”

Section: Rule Of Mixturesmentioning

confidence: 99%

“…However, their strength and conductivity are decreased by the substantial solid solubility of Fe atoms in the Cu matrix at high temperatures, and the slow precipitation speed at low temperatures [7,8]. Their properties may be improved by multi-component alloying [8][9][10][11][12][13]. Wang et al [14], Song et al [15], and Xie et al [16] investigated the influence of Ag.…”

Section: Introductionmentioning

confidence: 99%

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

Liu

Sheng

et al. 2020

Materials

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The tensile strength evolution and strengthening mechanism of Cu–Fe in-situ composites were investigated using both experiments and theoretical analysis. Experimentally, the tensile strength evolution of the in-situ composites with a cold deformation strain was studied using the model alloys Cu–11Fe, Cu–14Fe, and Cu–17Fe, and the effect of the strain on the matrix of the in-situ composites was studied using the model alloys Cu–3Fe and Cu–4.3Fe. The tensile strength was related to the microstructure and to the theoretical strengthening mechanisms. Based on these experimental data and theoretical insights, a mathematical model was established for the dependence of the tensile strength on the cold deformation strain. For low cold deformation strains, the strengthening mechanism was mainly work hardening, solid solution, and precipitation strengthening. Tensile strength can be estimated using an improved rule of mixtures. For high cold deformation strains, the strengthening mechanism was mainly filament strengthening. Tensile strength can be estimated using an improved Hall–Petch relation.

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Section: Resultssupporting

confidence: 93%

Section: Cu-fe In-situ Compositessupporting

confidence: 93%

Section: Rule Of Mixturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Liu

Sheng

et al. 2020

Materials

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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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Microstructure and Texture Evolution of Rolled Plate for Cu–15Cr In-Situ Composite

Zhu

Liu

et al. 2020

Met. Mater. Int.

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Cu-7Cr-0.1Ag Microcomposites Optimized for High Strength and High Condutivity

Cited by 6 publications

References 14 publications

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

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

Microstructure and Electrical Resistivity of In Situ Cu-Fe Microcomposites

Microstructure and Texture Evolution of Rolled Plate for Cu–15Cr In-Situ Composite

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