Investigation on Strength, Ductility and Electrical Conductivity of Cu-4Ag Alloy Prepared by Cryorolling and Subsequent Annealing Process

Guo, Shengli; Liu, Shengpu; Liu, Jiachen; Gao, Zengqiang; Li, Defu; Liu, Zhiguo

doi:10.1007/s11665-019-04448-7

Cited by 11 publications

(3 citation statements)

References 23 publications

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“…At present, most water-cooled magnets above 30 T are made of Cu-Ag alloy sheets [ 8 , 9 , 10 ]. Since Ag is expensive, low Ag content (<8 wt.%) Cu-Ag alloys have been widely studied to reduce the cost [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Zhang et al [ 18 ] prepared a Cu-5Ag alloy sheet with a strength of 870 MPa and an electrical conductivity of 78% IACS by obtaining a deformation nanotwin structure at liquid nitrogen temperature.…”

Section: Introductionmentioning

confidence: 99%

Achieving High Strength and High Conductivity of Cu-6 wt%Ag Sheets by Controlling the Aging Cooling Rate

Zhang

Zuo

et al. 2023

Materials

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In this paper, Cu-6 wt%Ag alloy sheets were prepared using vacuum induction melting, heat treatment, and cold working rolling. We investigated the influence of the aging cooling rate on the microstructure and properties of Cu-6 wt%Ag alloy sheets. By reducing the cooling rate of the aging treatment, the mechanical properties of the cold-rolled Cu-6 wt%Ag alloy sheets were improved. The cold-rolled Cu-6 wt%Ag alloy sheet achieves a tensile strength of 1003 MPa and an electrical conductivity of 75% IACS (International Annealing Copper Standard), which is superior to the alloy fabricated with other methods. SEM characterization shows that the change in properties of the Cu-6 wt%Ag alloy sheets with the same deformation is due to a precipitation of the nano-Ag phase. The high-performance Cu-Ag sheets are expected to be used as Bitter disks for water-cooled high-field magnets.

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Section: Introductionmentioning

confidence: 99%

Achieving High Strength and High Conductivity of Cu-6 wt%Ag Sheets by Controlling the Aging Cooling Rate

Zhang

Zuo

et al. 2023

Materials

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“…For example, a Cu-24 pctAg alloy achieved a strength of 1000 MPa and conductivity of 80 pctIACS. [15] These merits indicate the promising potential of Cu-Ag in-situ composites for conductors used to manufacture windings used in high-field magnets that operate in the range of 5 to 100 T. [16][17][18] A reliable Cu-Ag conductor should exhibit high electrical conductivity, as well as resistance to stresses generated by the Lorentz force. Therefore, Cu-Ag conductors should possess high mechanical strength, high conductivity, and good ductility.…”

Section: Introductionmentioning

confidence: 99%

Effect of Alloying Elements on the Microstructure and Performance of Cu-6 pctAg In-Situ Composites

Zhang

Guo

Zhaoyan

et al. 2020

Metall Mater Trans A

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As candidates for conductors used in high-field extreme conditions, Cu-Ag in-situ composites are required to possess high strength and conductivity; however, most Cu-Ag in-situ composites do not possess both characteristics. Therefore, it is important to determine the appropriate composition design of Cu-Ag composites that can enhance the mechanical properties while maintaining a relatively good electrical conductivity. This paper describes the effect of several potential alloying elements (Cr, Nb, and Zr) on the microstructures and mechanical properties of Cu-6 pctAg in-situ composites. The results reveal that the addition of both Cr and Nb refined the morphology of the Ag filaments and considerably improved the tensile strengths of the drawn Cu-Ag composites at large strains. Particularly, the ultimate tensile strengths of the Cu-6 pctAg-1 pctCr composites were improved by approximately 23 pct than that of the Cu-6 pctAg binary composites, with only a slight loss in conductivity. By contrast, the addition of 1 pctZr to the Cu-Ag composites had a negative effect on the morphology of the Ag filaments; it only improved the hardness at low drawing stains while reducing both the tensile strength and electrical conductivity.

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“…(b) Corresponding strain-hardening response for the annealed TiZrNbTa HEAs. (c) Changing rate of yield strength versus that of elongation with the increase in annealing temperature for the introduced TiZrNbTa HEAs relative to other reported HEAs [6,[31][32][33][34][35][36][37][38][39], steels [3,[40][41][42][43][44], copper alloys[45][46][47][48], aluminum alloys [5,[49][50][51], titanium alloys [4,[52][53][54], magnesium alloys[55][56][57], pure metals[58][59][60], nickel alloys[61], molybdenum alloy[62], and zirconium alloy[63]. The properties of strength and ductility obtained after HTA and LTA are denoted as Y HTA and Y LTA , respectively.…”

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confidence: 99%

Phase dissolution strengthens and ductilizes a high-entropy alloy

Wang

Tang

et al. 2022

Sci. China Mater.

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Annealing is widely used in the thermomechanical processing of metallic alloys. Usually, ductility enhances while strength decreases because defects annihilate with the increase in annealing temperature. Here, we report a simultaneous improvement in strength and ductility of a TiZrNbTa high-entropy alloy by promoting phase dissolution with increasing annealing temperature. When annealing is performed from 800 to 1250°C, the tensile yield strength increases by 40% to 1003 ± 16 MPa, and the elongation is nearly doubled to 16.79% ± 1.03%. The annealing-induced phase dissolution promotes lattice distortion, contributing to enhanced lattice friction stress and yield strength. The correspondingly decreased interface mismatch alleviates stress concentration, and the stimulated formation of local chemical orders encourages coplanar slip and dislocation multiplication. Both occurrences boost ductility. These results not only expand our understanding of the phase dissolution and annealing effect in metallic materials, but also provide an insight into designing strong and ductile alloys.

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Investigation on Strength, Ductility and Electrical Conductivity of Cu-4Ag Alloy Prepared by Cryorolling and Subsequent Annealing Process

Cited by 11 publications

References 23 publications

Achieving High Strength and High Conductivity of Cu-6 wt%Ag Sheets by Controlling the Aging Cooling Rate

Achieving High Strength and High Conductivity of Cu-6 wt%Ag Sheets by Controlling the Aging Cooling Rate

Effect of Alloying Elements on the Microstructure and Performance of Cu-6 pctAg In-Situ Composites

Phase dissolution strengthens and ductilizes a high-entropy alloy

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