High Electrical and Thermal Conductivity Cast Al-Fe-Mg-Si Alloys with Ni Additions

Casting of Recycled Aluminum Cans to Electrical Conductivity Tape Production

“…drop in the electrical conductivity of the alloys is observed as the cold rolling process increases. In the same way, it occurs that with the addition of Cu and Mg over the aluminum sample (50:50) as a base[27]. A similar study was carried out by Kotiadis et al using aluminum alloys with transition metals such as Fe and Ni that have the potential to form alloys with high electrical and thermal conductivity for heat dissipation applications.…”

Enhanced Mechanical Strength and Electrical Conductivity of Al–Ni‐Based Conductor Cast Alloys Containing Mg and Si

“…[ 3 ] Al – Si‐, Al – Fe‐, and Al – Ni‐based alloy systems are the principal cast alloys investigated for the development of high‐strength conductor products. [ 2–4 ]…”

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Ni-based alloy systems are the principal cast alloys investigated for the development of high-strength conductor products. [2][3][4] Al-Si-based alloys (typically A365) are commonly used in automotive cast components owing to their excellent castability and high mechanical strength (YS ≥ 175 MPa). However, these Al alloys present a low EC (≤40% IACS), [5] which renders them less suitable as conductor alloys.

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“…[2,5] Recently, several studies have been conducted to identify alternative alloy systems to Al-Si based alloys for castable Al conductor alloys. [4][5][6][7] Kotiadis et al and Kim et al [4,5] investigated the effect of Ni addition in Al-Fe-based alloys for highconductivity applications. Koutsoukis et al [5] investigated Al-Ni, Al-Fe, and Al-Fe-Ni eutectic systems as castable conductor alloys.…”

“…[3] However, Al-Ni-based alloys generally exhibit unsatisfactory mechanical strengths due to the limited contribution of Ni in alloy strengthening, either as a solid solution or precipitation hardening. [4,5] The main challenge in developing a high-strength castable Al conductor alloy is the mutually exclusive nature of the electrical and mechanical properties, that is, the mechanisms that improve the strength deteriorate the EC, and vice versa. The principal strengthening mechanisms of Al-cast alloys include solid solution, grain boundary, and precipitation strengthening.…”