Mechanical properties of commercially pure aluminium subjected to repetitive bending and straightening process

2008 ◽  
Vol 61 (2-3) ◽  
pp. 165-167 ◽  
Author(s):  
A. Krishnaiah ◽  
U. Chakkingal ◽  
H. S. Kim
Keyword(s):  
Mechanical Properties ◽  
Pure Aluminium ◽  
Commercially Pure

scholarly journals Novel Drawing System Approach To Manufacture Performant Commercially Pure Aluminium Fine Wires

2021 ◽  
Author(s):  
Serafino Caruso ◽  
Giuseppina Ambrogio
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Wire Drawing ◽  
Grain Structure ◽  
Pure Aluminium ◽  
Fine Grain ◽  
Commercially Pure ◽  
Drawing System ◽  
Aluminium Wire ◽  
Evolution Of Microstructure

Abstract Due to its electro-mechanical properties, commercially pure aluminium wires have attracted the interest of automotive industry representing a functional and efficient economic solution to reduce vehicle’s weight leading to the diminishing of energy consumption and emissions in today’s society. However, to consolidate its use in this sector and in new market realities, it is necessary to increase the flexibility of the aluminium conductor wires, consenting their installation in very small spaces and with high curvatures, avoiding any failure and electrical conductivity decrease. Thus, the evolution of microstructure and service performance need to be investigated and controlled to improve the service safety. The present research shows a new approach to efficiently continuously manufacture long wires with smaller diameters and fine grains at room temperature. It is studied the strengthening effects (yield and tensile strength, plasticity, hardness), the electrical conductivity and the microstructural changes of commercial 1370 pure aluminium (99.7% Al) when traditional wire drawing process is combined with equal channel angular drawing (ECAD) technique. The results of this proposed procedure of deformation “drawing-ECAD-drawing” show an evident benefit, compared to the classic technology of production of aluminium wire, obtaining fine grain structure product with superior mechanical strength and not influenced electrical conductivity. The proposed manufacturing approach leads to fine wires enhancing the material mechanical properties by microstructural evolution (i.e. grain size reduction) avoiding the traditional post manufacturing thermal treatments requiring a high amount of energy and time and careful steps.

scholarly journals Evolution of pitting corrosion resistance and mechanical properties in ultrafine-grained commercially pure aluminium during annealing

2021 ◽  
Author(s):  
Marta Orłowska ◽  
Ewa Ura-Bińczyk ◽  
Bogusława Adamczyk-Cieślak ◽  
Lech Olejnik ◽  
Małgorzata Lewandowska
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Mechanical Strength ◽  
Pitting Corrosion ◽  
Pure Aluminium ◽  
Commercially Pure ◽  
Intermetallic Particles ◽  
Pitting Corrosion Resistance ◽  
Ultrafine Grained ◽  
Deformed State

AbstractThe aim of the present study was to determine the evolution of resistance to pitting corrosion and changes in the mechanical properties of ultrafine-grained aluminium during annealing. In contrast to the numerous papers devoted to the topic of the corrosion resistance of severely deformed aluminium alloys, a unique approach has been taken in this study. The size and distribution of the primary intermetallic particles, which are crucial in terms of corrosion resistance, remain constant during annealing. Therefore, the influence of other microstructural features could be investigated and compare with the results of mechanical properties. It was shown that the ultrafine-grained structure of commercially pure aluminium was stable up to 200 °C. Higher annealing temperatures caused significant grain growth and a reduction in dislocation density, which resulted in a drop in mechanical strength. Also, the corrosion resistance slightly decreased, since with an increase in annealing temperature a decrease in the corrosion potential, pit size, and the area damaged by corrosion attack were noted. The best combination of mechanical strength and resistance to pitting corrosion has been achieved for as-deformed state.

scholarly journals Novel drawing system approach to manufacture performant commercially pure aluminium fine wires

2021 ◽  
Author(s):  
Serafino Caruso ◽  
Giuseppina Ambrogio
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Wire Drawing ◽  
Grain Structure ◽  
Pure Aluminium ◽  
Fine Grain ◽  
Commercially Pure ◽  
Drawing System ◽  
Aluminium Wire ◽  
Evolution Of Microstructure

AbstractDue to its electro-mechanical properties, commercially pure aluminium wires have attracted the interest of automotive industry representing a functional and efficient economic solution to reduce vehicle’s weight leading to the diminishing of energy consumption and emissions in today’s society. However, to consolidate its use in this sector and in new market realities, it is necessary to increase the flexibility of the aluminium conductor wires, consenting their installation in very small spaces and with high curvatures, avoiding any failure and electrical conductivity decrease. Thus, the evolution of microstructure and service performance needs to be investigated and controlled to improve the service safety. The present research shows a new approach to continuously manufacture efficient long wires with smaller diameters and fine grains at room temperature. It is studied the strengthening effects (yield and tensile strength, plasticity, hardness), the electrical conductivity, and the microstructural changes of commercial 1370 pure aluminium (99.7% Al) when traditional wire drawing process is combined with equal channel angular drawing (ECAD) technique. The results of this proposed procedure of deformation “drawing-ECAD-drawing” show an evident benefit, compared to the classic technology of production of aluminium wire, obtaining fine grain structure product with superior mechanical strength and not influenced electrical conductivity. The proposed manufacturing approach leads to fine wires enhancing the material mechanical properties by microstructural evolution (i.e. grain size reduction) avoiding the traditional post manufacturing thermal treatments requiring a high amount of energy and time and careful steps.

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