Thermomechanical processing of Cu–Ni–Si–Cr–Mg alloy

Rdzawski, Z.; Stobrawa, J.

doi:10.1179/mst.1993.9.2.142

Cited by 53 publications

(29 citation statements)

References 3 publications

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“…Moreover, up to now, most of the previous studies focused on the precipitates of Cu-Ni-Si alloys and additional P, Cr elements to improve the strength [11][12][13]. In this study, the effect of microstructure and mechanical properties of Cu-2.1Ni-0.5Si-0.2Zr alloy after cold deformation was investigated.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of Cu–Ni–Si–Zr alloy after thermomechanical treatments

et al. 2013

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The effect of thermomechanical treatments on the microstructures and properties of Cu-2.1Ni-0.5Si-0.2Zr alloy was investigated. The hot-rolled plates were solution treated at 920°C for 1.5 h, quenched into water, cold rolled by 70 % reduction in thickness, and then aged at 400, 450 and 500°C for various times. The variation in tensile strength and electrical conductivity of the alloy was measured as a function of the aging time. The results show the peak strength value of 665 MPa for the alloy aged at 450°C for 2 h. However, the electrical conductivity is observed to reach a maximum of 47 % IACS aged at 450°C for 8 h. OM, SEM, and TEM were used for microstructural inspection of the alloy. Precipitation occurs preferentially at deformation bands in the cold-rolled alloy. Properties behavior is discussed in the light of microstructural features.

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Section: Introductionmentioning

confidence: 99%

Microstructure and properties of Cu–Ni–Si–Zr alloy after thermomechanical treatments

et al. 2013

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“…These requirements apply to the whole spectrum of properties at the same time. Modern materials are expected to be both durable and reliable during operation, and thus have good strength, electrical and thermal properties [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…However, the growing range of applications has led to an expansion of the research to date, with the aim of developing alloys with better performance properties, i.e., high hardness and abrasion resistance, at the same time as electrical conductivity being maintained or slightly reduced. A significant part of these properties are met by precipitation-hardened copper alloys such as Cu-Fe, Cu-Cr, Cu-Co, Cu-Ni-Si and Cu-Ni-Si-Cr [1,2,[5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Precipitation Strengthening of Cu–Ni–Si Alloy

et al. 2020

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The work examines the effect of rhenium addition on the structure and properties of Cu–2Ni–1Si alloys. The aim of this work was to answer the question of how the addition of rhenium will affect the strengthening mechanisms of rhenium-modified, saturated, plastically deformed and aged Cu–2Ni–1Si alloys. How will this affect the crystallization process? What effect will it have on the properties? Scanning electron microscopy (SEM) and analysis of chemical composition in microareas (energy-dispersive X-ray spectroscopy, EDS), light microscopy, measurements of microhardness and conductivity of the alloys were used for the investigations. Research on chemical and phase composition were carried out with application of transmission electron microscopy (TEM), and scanning transmission electron microscopy (STEM). Modification with rhenium has caused an increase in hardness as a result of precipitation of small phases with rhenium. As the effect of supersaturation, cold plastic treatment as well as aging small phases with rhenium with a size of 200 nm to 600 nm causes both reinforcement of the alloy and makes recrystallization impossible. Re-addition also influences the stabilization of the structure.

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“…The balance of their hardness and electrical conductivity is competitive with that of the widely used Cu-Be based alloys 1,2) . Therefore, a number of fundamental and practical research efforts addressing Cu-Ni-Si alloys have been attempted to understand the mechanisms affecting age-induced microstructural evolution and to further improve their superior properties [3][4][5][6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Microstructural Subsequence and Phase Equilibria in an Age-Hardenable Cu-Ni-Si Alloy

et al. 2018

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We investigated the microstructural subsequence and phase equilibrium of Cu-4.3 at% Ni-2.2 at% Si alloy specimens during isothermal aging over a temperature range of 698 K to 873 K. During aging in this temperature range, the microstructure of the specimens evolved in the following sequence; continuous precipitation of ne disk-shaped δ-Ni 2 Si in the matrix, discontinuous precipitation of cellular components containing coarse ber-shaped δ-Ni 2 Si at grain boundaries, and then occupation of the specimen with cellular components. By analyzing the variations in the hardness and electrical conductivity with aging time as well as temperature, we described the kinetics of the highest number density of ne δ-Ni 2 Si continuous precipitates. Based on the chemical analyses of the specimen in a phase equilibrium state using an extraction procedure, we proposed a revised solvus of solutes Ni and Si in the Cu solid solution phase, as well as Cu in the δ-Ni 2 Si intermetallic phase in a Cu-δ-Ni 2 Si pseudo-binary system. [

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Thermomechanical processing of Cu–Ni–Si–Cr–Mg alloy

Cited by 53 publications

References 3 publications

Microstructure and properties of Cu–Ni–Si–Zr alloy after thermomechanical treatments

Microstructure and properties of Cu–Ni–Si–Zr alloy after thermomechanical treatments

Precipitation Strengthening of Cu–Ni–Si Alloy

Microstructural Subsequence and Phase Equilibria in an Age-Hardenable Cu-Ni-Si Alloy

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