Effect of processing and heat treatment on behavior of Cu-Cr-Zr alloys to railway contact wire

Liu, Qiang; Zhang, Xiang; Ge, Yan Liu; Wang, Jing; Chen, Jianzhong

doi:10.1007/bf02586158

Cited by 152 publications

(87 citation statements)

References 21 publications

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“…This is mainly due to the formation of the fine and coherent nanosized Cr-rich particles, which precipitate from supersaturated copper matrix [29]. The microhardness reached the peak value of 185 HV0.1 at 480 • C after 30 min, which can be attributed to the precipitation of Cr that are fully coherent with the Cu matrix and have the same fcc lattice parameter, as reported by Liu et al [21] who suggest fully coherent Cr-rich precipitates at 480 • C after 60 min. Though, this behavior appears to be due to the enhanced kinetics of precipitation as a result of ECAP processing.…”

Section: Discussionsupporting

confidence: 72%

“…CuCrZr alloys are classified as precipitation-hardened (PH) materials processed by heat treatment which are traditionally used in applications where a combination of high mechanical strength, heat resistance and electrical (or thermal) conductivity is demanded (electrodes for point welding, heat exchangers, etc.) [21][22][23]. It has to be mentioned that CuCrZr alloys are considered as a prime material for fusion reactors (international thermonuclear experimental reactor -ITER) [24,25].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Severe Plastic Deformation and Heat Treatment on CuCrZr Alloys

et al. 2017

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CuCrZr alloy was subjected to equal channel angular pressing method, belonging to the severe plastic deformation group, followed by heat treatment under different ageing conditions to optimize mechanical properties of the alloy. Before equal channel angular pressing, CuCrZr alloy was treated by solution annealing at temperature 1020 • C for 1 h. Afterwards, samples were pressed through an equal channel angular pressing die once at room temperature and subjected to artificial ageing under different conditions (200, 400, 450, 480 • C for 30, 60, 90, 120, 150 min). Optimization of the CuCrZr alloy was done through the study of mechanical properties and microhardness as a function of ageing temperature and time considering the progress in microstructural/substructural features.

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Section: Discussionsupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

The Effect of Severe Plastic Deformation and Heat Treatment on CuCrZr Alloys

et al. 2017

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“…These alloys are preferred especially in trolley wire, in spot resistance welding electrodes and production of certain components used in nuclear power plants. Also, it is increasingly used in specific fields which require high electrical conductivity and wear resistance [1,2]. Dry sliding wear behaviours of Cu-alloys are very similar to the wear behaviours of ductile metals and their alloys.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of the Effects of Ageing Parameters on Wear Behaviours and Electrical Conductivity of Cu-Co-Be Alloys

2016

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In this study, the effects of ageing parameters were investigated on wear behaviours and electrical conductivity of Cu-Co-Be alloy. The samples were quenched at room temperature after solution heat treated for 1 h. Then, ageing processes were applied for three different temperatures (470• C) and for three different ageing times (1, 2, 3 h). Microstructure examining, electrical conductivity and hardness measurements were carried out after ageing process. On the samples, which obtained the highest hardness values from hardness test (470

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“…Copper and its alloys have been widely used in the fields of power, electron, engineering machinery, and railway industries due to high electrical conductivity [1][2][3]. However, its strength at room and high temperatures cannot meet the requirement of application in the aerospace industry and high-speed railway.…”

Section: Introductionmentioning

confidence: 99%

Aging characteristic of Cu-0.6Cr-0.15Zr-0.05Mg-0.02Si alloy containing trace rare earth yttrium

Cheng

2011

Rare Metals

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The aging characteristic of Cu-0.6Cr-0.15Zr-0.05Mg-0.02Si alloy containing trace rare earth yttrium was investigated. The results showed that Cu-0.6Cr-0.15Zr-0.05Mg-0.02Si alloy obtained good comprehensive performance after 80% rolling and then aging at 480°C for 1 h; the hardness and electrical conductivity reached HV 150 and 85.5% IACS, respectively. Increasing aging temperature accelerated aging precipitation. The time for attaining peak hardness was postponed, the precipitates were finer (2-4 nm), and the interparticle spacing was shorter due to yttrium addition. The hardness and electrical conductivity of the Y-containing alloy after 80% deformation and then aging at 480°C for 45 min reached HV 174 and 82.1% IACS, respectively.

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Effect of processing and heat treatment on behavior of Cu-Cr-Zr alloys to railway contact wire

Cited by 152 publications

References 21 publications

The Effect of Severe Plastic Deformation and Heat Treatment on CuCrZr Alloys

The Effect of Severe Plastic Deformation and Heat Treatment on CuCrZr Alloys

An Investigation of the Effects of Ageing Parameters on Wear Behaviours and Electrical Conductivity of Cu-Co-Be Alloys

Aging characteristic of Cu-0.6Cr-0.15Zr-0.05Mg-0.02Si alloy containing trace rare earth yttrium

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