scholarly journals Research on Mechanical and Electrical Properties of Cu-Ag Alloys Designed for the Construction of High Magnetic Field Generators

2021 ◽  
Vol 5 (4) ◽  
pp. 103-107
Author(s):  
Artur Kawecki ◽  
Eliza Sieja-Smaga ◽  
Kinga Korzeń ◽  
Magdalena Majchrowska ◽  
Piotr Noga
Keyword(s):  
Magnetic Field ◽  
Heat Treatment ◽  
Electrical Properties ◽  
Rapid Heating ◽  
Microstructural Analysis ◽  
Casting Process ◽  
Weight Percent ◽  
High Heat ◽  
Cast State ◽  
Mechanical And Electrical Properties

The individual sections, wiring and construction of electromagnet windings responsible for strong magnetic field impulses may be one application for hypoeutectic Cu-Ag alloys. High electrical properties and mechanical properties (tensile strength, yield strength, impact strength) as well as high heat, fatigue and rheological resistance are required for these kinds of applications due to the unique nature of such operations (strong vibrations of high frequency and amplitude resulting from Lorenz forces and the possibility of significant and rapid heating from Jule’s heat). The limited solubility of copper and silver in the solid state enables the effective modification of the alloys’ microstructure through heat treatment and further shaping of their high mechanical and electrical properties via cold plastic working. The article presents the manufacturing of Cu-Ag alloys with the weight percent of Ag between 3 and 7 using the continuous casting process along with research on the physicochemical, mechanical and electrical properties of the obtained casts. The research on the amount of plastic deformation and its influence on the wire drawing process and the mechanical and electrical properties of the wires is also discussed. The temperature coefficients of resistance were defined in order to determine the temperature influence on the electrical resistance changes dynamics. The microstructural analysis was carried out in the as-cast state. The preliminary research conducted indicates that the obtained Cu-Ag alloys in the as-cast state exhibit a set of high mechanical and electrical properties. The prospective next stage of research includes the selection of favourable heat treatment parameters which would provide optimally modified microstructure of the alloys, as well as determining the deformation coefficients allowing for further increases in the mechanical and electrical properties.

scholarly journals The Effect of Al-Mg-Si Wire Rod Heat Treatment on Its Electrical Conductivity and Strength

Metals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1027
Author(s):  
Beata Smyrak ◽  
Bartosz Jurkiewicz ◽  
Małgorzata Zasadzińska ◽  
Marek Gniełczyk ◽  
Patryk Jałowy
Keyword(s):  
Heat Treatment ◽  
Electrical Properties ◽  
Low Temperature ◽  
Natural Aging ◽  
Heat Treatments ◽  
Raw Material ◽  
High Temperature Heat Treatment ◽  
Mechanical And Electrical Properties ◽  
Temperature Heat ◽  
Temperature Heat Treatment

The raw material for the production of Al-Mg-Si wires is wire rods, created in the Continuus Properzi line in temper T1 (cooled after forming at an elevated temperature and after natural aging). The general technologies for shaping the mechanical and electrical properties of Al-Mg-Si wire rods include two kinds: high- and low-temperature heat treatments. High-temperature heat treatment includes a homogenization process and a supersaturation process. Low-temperature heat treatment takes place after supersaturation and includes natural or artificial aging. This study shows how the amount of Mg and Si influences the mechanical and electrical properties of EN-AW 6101 wire rods after different kinds of heat treatments. As the general aim of this study was to determine the effect of the material’s temper on its mechanical and electrical properties, the research considered the initial parameters of the starting materials being examined. These parameters can be modified by selecting the chemical composition of the Al-Mg-Si alloy and the value of precipitation hardening obtained with artificial.

Rheological Resistance of CuAg15 Alloy Wires

2016 ◽  
Vol 682 ◽  
pp. 393-400
Author(s):  
Eliza Sieja-Smaga ◽  
Kinga Korzeń ◽  
Artur Kawecki ◽  
Beata Smyrak ◽  
Grzegorz Kiesiewicz ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Mechanical Treatment ◽  
Microstructural Analysis ◽  
Cast Material ◽  
Treatment Processes ◽  
Mechanical And Electrical Properties ◽  
Optimum Parameters ◽  
Thermo Mechanical Treatment ◽  
Very High ◽  
Scanning Electron

The paper presents the results of studies on obtaining the alloy and generating a set of very high mechanical and electrical properties of wires. The paper also presents the results of testing the rheological resistance in the form of stress relaxation tests carried out on the wires after various thermomechanical treatment processes. The optimum parameters of the thermo-mechanical treatment of the alloy were determined, enabling obtaining the most favorable mechanical and electrical properties of wires. The relationships of the influence of the material and its deformation on the changes in the mechanical and electrical properties of wires were determined. In addition, a microstructural analysis was carried out of casts and wires using scanning electron microscopy. Cast material was subject to observation and the material at successive stages of heat treatment.

The Influence of Aging on Industrially Cold Drawn Aluminum Alloy (6101) Used in the Electric Transmission Lines

2016 ◽  
Vol 24 ◽  
pp. 9-16 ◽  
Author(s):  
Mosbah Zidani ◽  
Mohamed Djamel Hadid ◽  
Toufik Djimaoui ◽  
Salim Messaoudi ◽  
Lakhdar Bessais ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electrical Resistivity ◽  
Aluminum Alloy ◽  
Electrical Properties ◽  
Transmission Lines ◽  
Resistivity Measurement ◽  
Cold Drawing ◽  
Electrical Resistivity Measurement ◽  
Mechanical And Electrical Properties ◽  
Alloy Increase

An investigation has been done to study the effect of heat treatment at low temperature on the development of mechanical and electrical properties of the industrially cold drawn aluminum alloy wires (6101). This aluminum alloy is used by the national company of electric cables of Biskra (ENICAB) for the transmission lines of electrical energy. The mechanical and electrical properties of the Al-Mg-Si alloys can be changed by heat treatment. Different technical procedures have been used In order to understand the complicated effect of aging on 6101 aluminum alloy; we have used the optical microscopy, hardness measurements and the electrical resistivity measurement. It was noted that the cold drawing of this aluminum alloy increase the microhardness which is produced by a high strain hardening of the material accompanied by a development of a fibrous texture. We notice also that the electrical resistivity of the alloy increase with an increase of the deformation level and decrease of this properties with the increasing aging time at 170 ° C.

Studies on the Nucleation Behaviors of Precipitation in Aluminum Metallization

1992 ◽  
Vol 260 ◽  
Author(s):  
Jen-Ren Wang ◽  
Jian-Yang Lin ◽  
Huey-Liang Hwang
Keyword(s):  
Activation Energy ◽  
Electrical Properties ◽  
Interfacial Energy ◽  
Strain Energy ◽  
Weight Percent ◽  
Free Energies ◽  
Interfacial Energies ◽  
Mechanical And Electrical Properties ◽  
Aluminum Metallization ◽  
Aluminum Interconnects

ABSTRACTIn order to simulate the precipitation effect during the aluminum metallization in the VLSI processing, an analytical model was constructed in this work. The nucleation behaviors of the silicon and copper precipitates within the aluminum - 1.0 weight percent silicon - 0.5 weight percent copper were studied. The volume free energies and interfacial energies were estimated, and the activation energy barriers for the precipitate formation were calculated. Silicon precipitate is more likely to nucleate than copper precipitate due to its lower interfacial energy and strain energy. The mechanical and electrical properties of the aluminum interconnects can be improved by the precipitate hardening.

Electrical properties of anisotropic graphene/PDMS composites induced by aligned ferromagnetic particles

2020 ◽  
pp. 1045389X2096986
Author(s):  
Shuai Dong ◽  
Shiwei Chen ◽  
Bin Li ◽  
Xiaojie Wang
Keyword(s):  
Magnetic Field ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Percolation Threshold ◽  
Conductive Polymer ◽  
Critical Value ◽  
Iron Particles ◽  
Mechanical And Electrical Properties ◽  
Anisotropic Structures ◽  
Potential Applications

Graphene nanoplate (GNP) is a two-dimensional plate-like carbon material with high aspect ratio and excellent electrical conductivity. It is one of the most commonly used fillers for conductive polymer composites (CPCs), which have potential applications in flexible electrodes and sensors. The electrical properties of the CPCs particularly depend on the microstructure of GNP networks. The electrical conductivity of the CPCs leaps in several magnitude levels when the graphene concentration reaches a critical value, which is defined as the percolation threshold. For ordinary isotropic CPCs, the percolation threshold is relatively high, which leads to inferior performance with poor mechanical and electrical properties. Aligning the graphene plates is an effective method to reduce the percolation threshold of the CPCs. Carbonyl iron particles (CIPs) are easily aligned to form chain-like structures when a magnetic field is applied. In this work, CIPs and GNPs are mixed with polydimethylsiloxane (PDMS), and the hybrid is cured under a magnetic field of 0.5 T. The alignment of CIPs induces the GNPs in the PDMS to orientate in a certain direction under the applied magnetic field generating anisotropic structures. Both isotropic and anisotropic structured GNPs/PDMS composites are prepared with various GNP concentrations. The microstructure and electrical conductivity of the GNPs/PDMS composites are investigated by experimental methods. It is found that anisotropic graphene networks are formed and the percolation threshold of the anisotropic composites is 0.15 vol%, compared to that of the isotropic composites which is 0.85 vol%. The alignment of GNPs significantly reduces the percolation threshold. Furthermore, a plate lattice model is proposed to reveal the effect of the alignment of GNPs on the formation of conductive networks. With the increase of the alignment degree of GNPs, the percolation threshold decreases significantly, which is consistent with the experimental results.

scholarly journals Comparación y Efecto del Homogenizado en Billets de Aluminio AA 6063

2018 ◽  
Vol 3 (1) ◽  
pp. 322
Author(s):  
Bladimiro Hernán Navas Olmedo ◽  
Hernán Alberto Navas Moscoso
Keyword(s):  
Heat Treatment ◽  
Continuous Casting ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Casting Process ◽  
Weight Percent ◽  
Alloying Elements ◽  
Negative Effect ◽  
The Difference ◽  
Aluminum Profiles

The lack of comparative studies about the distribution of the main alloying elements along aluminum billet´s AA 6063 widely use in extrusion companies to produce aluminum profiles, It makes necessary to counterpoise the difference between homogenized billet produced in horizontal continuous casting machine and a billet produced in vertical semi-continuous casting process. Applying spectrometric tests to quantify the weight percent of main alloying elements, brings out its own nature of each production process on every billet. Nevertheless, helped out by a metallographic test reveals in one billet the negative effect of an inadequate process of homogenization after the heat treatment process T5 in the aluminum profiles that holds it back to reach an adequate Webster hardness related to quality assurance. It reflects that is not enough to have a billet with a uniform chemical composition but the importance of an adequate billet´s heat treatment in order to be use in the extrusion process.Keywords: AA 6063, Billet, Comparison, Homogenized

Research of Chemical Composition Influence on the Mechanical and Electrical Properties of Al-Mg-Si Wires

2016 ◽  
Vol 682 ◽  
pp. 138-142
Author(s):  
Beata Smyrak ◽  
Marek Gniełczyk ◽  
Bartosz Jurkiewicz ◽  
Tadeusz Knych ◽  
Kinga Korzeń ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Electrical Properties ◽  
Primary Component ◽  
Treatment Processes ◽  
Mechanical And Electrical Properties ◽  
Component Material ◽  
Precipitation Type ◽  
The Subject ◽  
Si Content ◽  
The Impact

The subject of the work focuses on hardened-precipitation type alloys Al-Mg-Si which constitute the primary component material used to build homogeneous electric wires, type AAAC (All Aluminium Alloy Conductor). The material in consideration is a well-known and well-studied alloy, particularly in terms of the possibilities for using it in thermal treatment processes. However, the subject literature does not present a comprehensive recognition of the effect of heat treatment parameters on the set of mechanical and electrical properties in wires grade 6101. In particular, the study presents the results of experiments that show the possibility of controlling the AlMgSi wire properties by means of selecting the heat treatment parameters for simultaneously obtaining a high tensile strength and high electrical conductivity. Hence, the research described in this paper focuses mostly on determining the impact of the Mg and Si content on the electrical and mechanical properties of wires of Al-Mg-Si wire alloys.

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