Effect of Co on Si and Fe-containing intermetallic compounds (IMCs) in Al–20Si–5Fe alloys

Consolidation of Rapidly Solidifying Al-6Si-0.3Cu Alloy by Spark Plasma Sintering and Cold Compaction Methods

“…Also, the absence of coarse primary Si phases in hypoeutectic Al-Si alloys increases the desired machinability, castability and weldability of the alloy, which makes it suitable for the construction of automotive engines, crankcases, cylinder blocks and pistons. The mechanical properties of hypoeutectic Al-Si alloys are dependent on the grain size, morphology and distribution of Si phase [6,7]. It is also well known that the addition of trace amounts of copper (Cu) strengthens the Al-Si alloy and increases its ductility, which is explained by the formation of the Al2Cu intermetallic compound [2].…”

Archives of Metallurgy and Materials

“…However, coarse plate-like eutectic Si and coarse columnar α-Al morphology usually exist in the microstructure of those alloys, which causes the poor mechanical properties [4]. This limitation of the conventional casting techniques led to the development of rapid solidification techniques such as gas atomization [13,14], spray casting [8], selective laser melting [6] and melt spinning, etc [5,15]. The rapid solidification techniques and conventional casting techniques differ from each other basically in terms of their cooling rate.…”

Effect of Si Addition on Microstructure and Tribological Properties of Al-0.1Mg-0.35Ni-(4, 6, 8, 10) wt %Si Alloy

“…The effect of Ni addition (2 wt %) on the Al-6Si-0.5Mg alloy and an increased tensile strength was observed after the alloy addition [6]. The effect of Co on the Al-Fe-Si alloy and found an increase in the hardness was observed after the Co addition [7]. The effect of Co addition on the Al-5Fe-25Si alloy by determining the micro hardness and an increase in the micro-hardness was observed after the Co addition upto 5 wt % [8].…”