Effect of V addition on hardness and electrical conductivity in Cu-Ni-Si alloys

Han, Seung Zeon; Gu, Jiho; Lee, J. H.; Shin, Jong‐Ho; Lim, Sung Hwan; Kim, S. S.

doi:10.1007/s12540-013-4002-x

Cited by 34 publications

(10 citation statements)

References 15 publications

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“…For instance, the addition of Al [4], Mg [5], Ti [6], Cr [7], Zr [8], V [9], or Co [10] have been proven to effectively improve the mechanical properties of Cu-Ni-Si alloys. The addition of Al and Mg can improve the precipitation kinetics and accelerate the formation rate of precipitates.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Jiang

Huang²,

Mi³

et al. 2019

Materials

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The properties and microstructural evolution of quaternary Cu-Ni-Co-Si alloys with different Ni/Co mass ratios are investigated systematically. These alloys exhibit higher mechanical properties when the Ni/Co mass ratio is 1.12-1.95 (NC-4-NC-5) and show excellent electrical conductivity when the Ni/Co mass ratio is 0.05-0.5 (NC-1-NC-3). With an increase in the Ni/Co ratio, the dimension of precipitated phase continues to increase and the grain size also visibly grows and coarsens. At the same time, the precipitation process of the NC-5 alloy is the most adequate, resulting in the highest mechanical properties. In addition, the precipitated phase in the alloys was confirmed to be the (Ni, Co)2Si composite phase. The number of Ni2Si phases in the precipitated phase gradually increased, and the Ni atoms exhibited the strongest co-segregation alongside the increasing Ni/Co ratio. Compared with the alloy without a Co element, the addition of Co helped refine the grain size and accelerate the precipitation of the particle phase and purify solute atoms in the matrix, thereby simultaneously improving mechanical properties and conductivity. The present work provides a new method for the development of multicomponent Cu-Ni-Si-Co-X alloys with outstanding comprehensive performance.

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Section: Introductionmentioning

confidence: 99%

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Jiang

Huang²,

Mi³

et al. 2019

Materials

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“…Their good property balance is mostly attributed to the formation of nanosized disc-shaped coherent δ-Ni 2 Si precipitates identified by transmission electron microscopy (TEM) [7][8][9][10][11]. Currently, the scientific literature on these alloys mainly deals with the microstructure evolution combined with the optimisation of the mechanical (hardness and tensile properties) and electrical behaviour thanks to their elaboration process [12][13][14][15][16][17][18], their heat treatments [7,12,[19][20][21] or their chemical composition [14,[22][23][24][25][26][27][28]. The scope of applications of Cu-Ni-Si alloys contains the transport sector, in electric engines for example.…”

Section: Introductionmentioning

confidence: 99%

Low cycle fatigue behaviour of a precipitation hardened Cu-Ni-Si alloy

Delbove

Vogt

Bouquerel

et al. 2016

International Journal of Fatigue

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Low cycle fatigue tests were performed at room temperature to investigate the role of the microstructure of a Cu-Ni-Si alloy on the stress response to strain cycling and on the fatigue resistance. The cyclic accommodation consisted in a hardening followed by a softening. TEM analysis showed that in some grains dislocations remained isolated and confined between precipitates while in other grains dislocations piled up at δ-Ni 2 Si precipitates and then cut them. Repetitive cutting allows their dissolution and formation of precipitate-free bands where the plastic deformation is localised. The Manson-Coffin diagram exhibited two regimes according to the proportion of grains involved in the plastic deformation accommodation. Keywords copper alloys-cyclic properties-low cycle fatiguemicrostructure-microscopy Highlights Investigated Cu-Ni-Si contains δ-Ni 2 Si nano precipitates-Cyclic hardening followed by softening is observed-Dissolution of δ-Ni 2 Si results from repetitive cutting-Deformation is localised in precipitate-free bands Highlights Investigated Cu-Ni-Si contains a high density of δ-Ni Si precipitates-Cyclic hardening followed by softening is observed-Dissolution of δ-Ni 2 Si results from repetitive cuttinglocalisation of deformation in precipitate-free bands

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“…Fe can significantly improve both the strength and conductivity [44]. Han et al [50] showed that the Cu-2.8Ni-0.7Si (wt.%) alloy could obtain a good combination of electrical conductivity and hardness by adding 0.1 wt.% V. The addition of Zr element has a detrimental effect on the mechanical properties of the Cu-Ni-Si alloy, whereas the best performance is obtained in the presence of Zr and Cr [51].…”

Section: Cu-ni-si Systemmentioning

confidence: 99%

High strength and high conductivity Cu alloys: A review

Yang

Lei

et al. 2020

Sci. China Technol. Sci.

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High strength and high conductivity (HSHC) Cu alloys are widely used in many fields, such as high-speed electric railway contact wires and integrated circuit lead frames. Pure Cu is well known to have excellent electrical conductivity but rather low strength. The main concern of HSHC Cu alloys is how to strengthen the alloy efficiently. However, when the Cu alloys are strengthened by a certain method, their electrical conductivity will inevitably decrease to a certain extent. This review introduces the strengthening methods of HSHC Cu alloys. Then the research progress of some typical HSHC Cu alloys such as Cu-Cr-Zr, Cu-Ni-Si, Cu-Ag, Cu-Mg is reviewed according to different alloy systems. Finally, the development trend of HSHC Cu alloys is forecasted. It is pointed out that precipitation and micro-alloying are effective ways to improve the performance of HSHC Cu alloys. At the same time, the production of HSHC Cu alloys also needs to comply with the large-scale, low-cost development trend of industrialization in the future.

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Effect of V addition on hardness and electrical conductivity in Cu-Ni-Si alloys

Cited by 34 publications

References 15 publications

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Influence of the Ni/Co Mass Ratio on the Microstructure and Properties of Quaternary Cu-Ni-Co-Si Alloys

Low cycle fatigue behaviour of a precipitation hardened Cu-Ni-Si alloy

High strength and high conductivity Cu alloys: A review

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