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The Cerium was added to produce Al-11Si-Cu-Mg-1.5Ce alloys.
With the development of modern industry and new casting technique, an increasing demand for aluminum cast alloys has emerged, of which Al-Si alloys account for 85% – 90% [1].
This paper aims to investigate the effect of Cerium addition on the microstructure of ADC12 cast alloy in different cooling rate.
The chemical compositions of this alloys is shown in Table 1.
Li, Journal of Alloys and Compounds, (2013).

a b c Fig. 1 : (a) OM – β-grains and intermetallic compounds at grain boudaries (b) OM – Widmanstätten α-plates (c) TEM : two different colonnies of α-plates.
In addition, cracks develop in primary β/β grain boundaries (Fig. 5b), where the intermetallic compounds and pores are numerous , β being also the more fragile phase.
Microscopic investigations enable us to understand fatigue mechanisms; they also emphasize the complexity of these die-cast alloys.
Ghonem, Microstructure and fatigue crack growth mechanisms in high temperature titanium alloys.
Journal of Materials Processing Technology

Electrochemical corrosion behavior of Sn–Zn solder alloys in 6 M potassium hydroxide solution was investigated by potentiodynamic polarization technique, aiming to investigate the role of Al additions.
Alloying elements are selectively incorporated into solder alloys to control the intermetallic compound (IMC) thickness and growth, increases toughness, and other mechanical properties.
Meanwhile, Ni micro-alloying altered the layer of Cu6Sn5 intermetallic compounds [5].
The molten alloys were stirred to homogenize the chemical composition.
Suganuma, Ti addition to enhance corrosion resistance of Sn–Zn solder alloy by tailoring microstructure, Journal of Alloys and Compounds, 644 (2015) 113-118

And subsequent treatment can furtherly enhance mechanical properties to satisfy the needs of structural materials. 6061 alloy is one of deformation aluminum alloys, which contains magnesium and silicon as major addition elements and can be strengthened through heat treatment [3-4].
The actual chemical elements and their contents of the alloys are Mg : 0.9; Si: 0.6; Cu: 0.3; Mn: 0.15; Fe: 0.7; Cr: 0.05; Zn:0.25 and Al: bal.
To determine the mechanical properties of the examined alloys, the hardness was tested and Rochwell hardness (HRB) measurements were performed on the samples after different solution treatment.
The aim of solution treatment is to obtain high intensity supersaturated solid solution, which is a good basis for ageing treatment.
(in Chinese) [2] Grażyna Mròwka-Nowotnik, Jan Sieniawski: Journal of Materials Processing Technology Vol.162-163(2005): 367-372

Recently, metallic powders, including pure iron, stainless steel, tool steel, titanium alloys, cobalt-chromium alloys, super-alloys based on nickel, copper and aluminum alloys, etc. have been used in additive technologies [4].
The X-ray diffraction failed to identify phases of intermetallic compounds, probably, because of their small volume fractions in samples.
In these samples of the alloy separate inclusions of chromium and molybdenum particles were detected, as well their cobalt and cobalt-free compounds.
Alloys Compd, 2015, 631, pp. 153-164
Alloys Compd., 2018, 750, 878–886

The present research aimed to investigate the microstructure and hardness of twin roll strip cast aluminum alloys strips by varying the speed of roller cast.
The 30 rpm strip cast clearly consisted of a dendrite structure, with eutectics and intermetallic compounds located in the interdendritic regions.
The eutectics and intermetallic compounds in the interdentritic region mainly contained Mg and Si elements, which were the main source of the strengthening of Al-Mg-Si alloy.
Haga, High-Speed Twin-Roll Strip Casting of Al–Mg–Si Alloys with High Iron Content, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007): 495-498
Watari, Twin roll casting of aluminum alloy strips, Journal of Materials Processing Technology 153 (2004): 42-47

Key words: SnAgCuRE, Solder alloy, Microstructure, Property Introduction In recent years, the pollution of environment from lead (Pb) and Pb-containing compounds in microelectronic devices attracts more and more attentions in academia and industry, the lead-free solder alloys begin to replace the lead-based solders in packaging process of some devices and components.
Accrording to referrence[2] ,this is because solder alloy doesn't come into being RE compound when RE addition belows 0.1%.
Conclusion (1) Solder alloy Sn2.5Ag0.7CuRE properties and structure is closely related with RE compound.
Journal of the China Rare Earth Society(2005)04:22-24 [3] Li,B.Shi,YW.Xia,ZD.
Effect of Rare Earths additionfor SnAgCu Solder Alloys,[J]Electronics Process Technology(2004)25:193－198

However, joining aluminum to steel is challenging because of the formation of intermetallic compounds (IMCs) at the interface, which can degrade the joint strength and performance.
The macrograph in Fig. 4 indicates that the two different alloys did not mix in the molten state.
The interaction of IMC with the composition of participating alloys should also be verified.
"Effect of intermetallic compounds on the mechanical property and corrosion behaviour of aluminium alloy/steel hybrid fusion-brazed welded structure." 
Journal of Alloys and Compounds 783 (2019): 753-764

The results show that the surface of the obtained pure aluminum coatings is acicular, while blocks Al-Mn compounds phase exists in Al-Mn alloys layer, and the Al-Mn alloy layer is composed of Al, FeAl3, Fe2Al5 and MnAl6 phases.
Owing to the non-ferrous metals and their alloys possess a number of special performances that steel material does not have.
The present work aims to form an anti-abrasive surface on Q235 steel by hot-dip.
The surface of the obtained pure aluminum coatings is acicular, while blocks Al-Mn compounds phase exists in Al-Mn alloys layer, and the Al-Mn alloy layer is composed of Al, FeAl3, Fe2Al5 and MnAl6 phases.
Voss: Journal of Nuclear Materials, Vol.249 (1997), p.39

The aim of this study is to analyze the microstructural variation of the Ti-15Zr alloy and some of that alloy’s mechanical properties with the addition of 5, 10, 15 and 20 wt% molybdenum.
Ho: Journal of Alloys and Compounds Vol. 488 (2009), p. 279-283
Luo: Journal of Alloys and Compounds Vol. 509 (2011), p. 6267-6272
Nakai: International Journal of Biomaterials Vol. 2011 (2011), 836587, 10 pages
Cao: Journal of Alloys and Compounds Vol. 509 (2011), p. 8235-8238