Investigation on electrical conductivity and hardness of 6xxx aluminum conductor alloys with different Si levels

Khangholi, Siamak Nikzad; Javidani, Mousa; Maltais, Alexandre; Chen, X.-Grant

doi:10.1051/matecconf/202032608002

Cited by 8 publications

(3 citation statements)

References 23 publications

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“…The aged samples contain different types of intermetallics but Al2Cu, Al2CuMg, Mg2Si and Al5FeSi phases are common which are responsible for the higher hardness. Higher amount of Si into the alloys produces higher amount of Si-rich intermetallics, resulting in higher hardness [24,29]. It is seen from Fig.…”

Section: Methodsmentioning

confidence: 90%

Wear studies on Al-Si automotive alloy under dry, fresh and used engine oil sliding environments

Khan¹,

Kaiser²

2022

Res. Eng. Struct. Mater.

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A comparative study has been made on the wear behavior of eutectic Al-Si automotive alloy under a dry, fresh and used engine oil sliding environment. The wear tests have been conducted using a standard pin-on-disc apparatus. The results show that with silicon content, the wear loss decreases up to the eutectic composition, mainly for an increase in strength through Si-rich intermetallics. Therefore the lower wear rate along with the coefficient of friction is observed under dry sliding environment. Under the engine oil environment, the lubricating film controls the wear, so the results are the lowest wear rate and coefficient of friction. Used oil shows both wear rate and friction coefficient to some extent higher due to the presence of heavy and harmful chemical compounds. Wear test surfaces are examined by optical and SEM analysis and found that higher abrasive wear and plastic deformation on the worn surfaces are created in dry sliding condition as well as lower Si added alloy. On the worn surface under engine oil lubricating condition, smooth surface morphology is observed as form a lubrication film and thumbs down any direct contact on the moveable surfaces. Higher Si-added alloys contain superior fine intermetallics due to ageing, which is responsible for such smooth worn surfaces.

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Section: Methodsmentioning

confidence: 90%

Wear studies on Al-Si automotive alloy under dry, fresh and used engine oil sliding environments

Khan¹,

Kaiser²

2022

Res. Eng. Struct. Mater.

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“…The measurements in [11] for the material EN AW 6016 show a similar percentage decrease in resistance. This means that the electrical conductivity of the base material is improved by heat treatment, as also explained in [30], using the aluminum layup EN AW 2024 and [31] for 6xxx aluminum conductors. Zhang et al [32] state in their investigations that heat-treated conductors have a higher electrical conductivity compared to the non-heat-treated conductors made of Al-Mg-Si alloys.…”

Section: Electrical Testmentioning

confidence: 97%

Influence of the Production Process on the Binding Mechanism of Clinched Aluminum Steel Mixed Compounds

Kalich

Füssel

2021

JMMP

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The multi-material design and the adaptability of a modern process chain require joining connections with specifically adjustable mechanical, thermal, chemical, or electrical properties. Previous considerations primarily focused on the mechanical properties. The multitude of possible combinations of requirements, materials, and component- and joining-geometry makes an empirical determination of these joining properties for the clinching process impossible. Based on the established and empirical procedure, there is currently no model that takes into account all questions of joinability—i.e., the materials (suitability for joining), design (security of joining), and production (joining possibility)—that allows a calculation of the properties that can be achieved. It is therefore necessary to describe the physical properties of the joint as a function of the three binding mechanisms—form closure, force closure, and material closure—in relation to the application. This approach illustrates the relationships along the causal chain “joint requirement-binding mechanism-joining parameters” and improves the adaptability of the mechanical joining technology. Geometrical properties of clinch connections of the combination of aluminum and steel are compared in a metallographic cross-section. The mechanical stress state of the rotationally symmetrical clinch points is qualified with a torsion test and by measuring the electrical resistance in the base material, in the clinch joint, and during the production cycle (after clinching, before precipitation hardening and after precipitation hardening).

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“…However, longer aging times were required to fulfill the minimum EC, giving rise to deterioration of precipitation strengthening and lower strength. Accordingly, the sample with Mg/Si~ 0.86 showed a limited window of hardness and EC [ 26,27 ].…”

Section: Principal Alloying Elements (Mg and Si)mentioning

confidence: 97%

Review on recent progress in Al–Mg–Si 6xxx conductor alloys

Khangholi

Javidani

Maltais³

et al. 2022

Journal of Materials Research

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Investigation on electrical conductivity and hardness of 6xxx aluminum conductor alloys with different Si levels

Cited by 8 publications

References 23 publications

Wear studies on Al-Si automotive alloy under dry, fresh and used engine oil sliding environments

Wear studies on Al-Si automotive alloy under dry, fresh and used engine oil sliding environments

Influence of the Production Process on the Binding Mechanism of Clinched Aluminum Steel Mixed Compounds

Review on recent progress in Al–Mg–Si 6xxx conductor alloys

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