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Effect of the Addition of Rare Earth Element La on the Tribological Behaviour of AlSi5Cu1Mg Alloy

“…Adding a small amount of rare earth to the metal can greatly improve the performance of the metal [16]. Many studies have shown that rare earth element modification can effectively improve the comprehensive mechanical properties of aluminium alloys [17,18]. Qiu et al [19] investigated the modification of near-eutectic Al-12Si alloys with samarium and found that a good mechanical performance of the upgrade has been obtained when the addition of Sm was up to 0.6 wt %.…”

Effect of Cold-Rolling on Damping Characteristics of Multi-Component Al–12%Si Alloy Measured by Dynamic Mechanical Analyzer

“…6,7) In order to ensure good mechanical properties, it is therefore important to refine and modify the primary silicon in hypereutectic AlSi alloys. 8,9) Grain refinement in hypereutectic AlSi alloys has been achieved by using techniques such as increasing the solidification rate, 10) the semi-solid process, 11) spray forming 12) and cold working. 13,14) In addition, precipitation-hardenable elements, mainly Mg, Cu and Ni, are also added to multi-component AlSi alloys to improve their mechanical properties.…”

Effect of Phosphorus and Strontium Additions on Formation Temperature and Nucleation Density of Primary Silicon in Al-19 Wt Pct Si Alloy and Their Effect on Eutectic Temperature

“…Crosley and Mondolfo [7] also reported lower T 1 when Na was added rather than P. Colligan and Gunes [8] reported formation of primary silicon at lower T 1 from P-refined melts. Tenekedjiev et al [9] reported decreased T 1 on Sr addition with or without P addition to Al-17 wt pct Si alloy,* and Chang et al [10] reported decreased T 1 with increased rare earth addition to Al-21 wt pct Si alloy. Kyffin et al [11] found a primary silicon arrest at some 50 K undercooling for Al-20 wt pct Si, which disappeared when 100 ppm P was present.…”