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To improve the mechanical properties of Al-Si alloys can be added Cu elements.
Ovono et al. [8] observed that fatigue cracks always nucleated from larger pores and intermetallic compounds of cast 333 aluminum alloys.They also found that the fatigue life of Al–Si–Cu alloys was essentially controlled by the volume fraction of pores and the density of intermetallic compounds.
SEM photograph of Al10Si-1Cu Fig. 4 shows the hardness values of alloys, 1% Cu hardness value of 84.29 HRB, 3% Cu alloys are 91.60 HRB, and 5% Cu alloys are 97.33 HRB, the higher the Cu content the higher the hardness .
In alloys with 5% Cu having a strain value of 2.4% whereas alloys with 1% Cu have a strain value of 3.1%.
Massinon, Study on low-cycle fatigue behaviours of the aluminium cast alloys, Journal of Alloys and Compounds 452 (2008) 425–431

The aim of the work was evaluation of electrochemical properties of Co-based alloys (Remanium GM 800+ and Biosil F) and Ni-based alloys (Heraenium NA and Remanium G-Soft) commonly used on frameworks for porcelain faced cast partial dentures.
The most commonly used metallic alloys for permanent dental restorations are Co-Cr and Ni-Cr alloys.
Material and methods The main aim of the work was evaluation of physiochemical properties of commonly used Co-based and Ni-based alloys for dental restorations.
Chowdhary: Evaluation on the Corrosion of the Three Ni-Cr Alloys with Different Composition, International Journal of Dentistry, 2011
Muench: “In vitro and in vivo corrosion evaluation of nickel-chromium- and copper-aluminum-based alloys,” Journal of Prosthetic Dentistry, vol. 84, no. 3, pp. 360–363 (2000)

Introduction Technically pure aluminum AD1 is used as a buffer of plasticity and a diffusion barrier during explosion welding of titanium with deformable aluminum alloys [1, 2].
The values of the constants of TiAl3 intermetallic compound for Johnson-Holmquist model are shown in Table 3 [7, 8].
Shmorgun, Intermetallic Compound Formation During Reaction of Molten Aluminum with Titanium. 
A computational investigation, AIMS Materials Science 3(3) (2016) 686-721
Journal de Physique IV 07(C3) (1997) 593-597.

The catalysts are aimed to be used as anode in alkaline fuel cells.
According to the SEM results, both compounds were formed in nanosized particles and BET results showed that BET surface area of V0.3Mo0.7O3 catalyst has 5 times higher than that of V0.6Mo0.4O3.
This study aims to give a quick report about the potential of the vanadium molybdenum mixed oxides to be used as catalyst in the fuel cells.
References [1] Sharma, S., Pollet, Bruno G., Journal of Power Sources, Vol 208, 15,(2012), Pages 96–119
J.A., Journal of Power Sources, Vol 196(2011), Pages 1762–1768 [4] Hu, Wei-Kang., Nore´, D., Journal of Alloys and Compounds, Vol.356–357 (2003) 734–737 [5] Rowshanzamir, S., Kazemeini, M., Journal of Power Sources, Vol 88(2000), Pages 262–268 [6] Bianchini, C., Shen, P.K., Chemical Reviews, Vol. 109 (2009), Pages 4183–4206

In all alloys, crystallization peaks were shifted to higher temperatures with an increasing heating rate as it is expected for a thermally initiated reaction.
Svec, Pecularities of nanocrystal formation in rapidly quenched (FeCo)MoCuB amorphous alloys, Journal of Microscopy – Oxford, 223, p. 288-291, 2006 [12] DM Kepaptsoglou, P Svec, D Janickovic, E Hristoforou, Evolution of lattice parameter and process rates during nanocrystallization of amorphous Fe-Co-Si-B alloy, Journal of Alloys and Compounds, 434, p. 211-214, 2007 [13] M.
[17] M Deanko, M Paluga, DM Kepaptsoglou, D Muller, P Mrafko, D Janickovic, E Hristoforou, I Skorvanek, P Svec, Pecularities of electrical resistivity during transformations in amorphous and nanocrystalline alloys, Journal of Alloys and Compounds, 434, p. 248-251, 2007 [18] DM Kepaptsoglou, G.
Hristoforou, Electron microscopy study of (Fe-Co)-Nb-Si-B alloys, J.
Reilly, New Mechanical Stress Transducers Based on Amorphous Alloys, IEEE Trans.

It is an effective way to improve properties of solder alloys by adding foreign minute dispersoids [6-11].
However, if the amount of intermetallic compounds are over, the wettability of the solder alloy maybe deteriorated.
From Fig.7, the intermetallic compounds (Cu6Sn5) between the solder and the Cu substrate increased with the increase of Ag content.
This is because Ag particles help to form the intermetalic compounds Cu6Sn5 between the substrate and solder alloy and improve the wettability of the composite solders.
Wettability of Lead-Free Alloys.

The article aims to put forward a kind of mold structure and corresponding composite squeeze casting process for large parts.
JOURNAL OF ALLOYS AND COMPOUNDS, 504(2010) , 42-45
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 101 (2000), 1-9
Special Casting & Nonferrous Alloys (2010), 305-308
Journal of Materials Processing Technology. (2003), 306-310

The effects of flux components and compositions of solder alloys on the wettability of the Sn-Zn alloys on aluminum surface was investigated.
Experiment Sn-9Zn alloy, Sn-9Zn-x Bi alloys, Sn-9Zn-x Sb alloys and Sn-9Zn-x Al alloys have been prepared from the pure metals (Sn, Zn, Bi≥99.95wt% and Al, Sb≥99.5wt%).
In this paper, 13 kinds of alloys were designed as listed in Table 1 aim to study the effects of Bi, Sb, Al on the wettability of Sn-9Zn solder on aluminum substrate respectively.
J Alloys Compd 2009;475:294-9
Journal of Alloys and Compounds ,2008,462: 244-251

Introduction The aim of this work is to obtain metallic alloys with high mechanical strength and high electric conductivity after adequate optimization of sintering and thermal treatments followed by structural, microstructural, electrical and mechanical characterization of Cu-y%Ni-x%Al alloys (where x and y are variable values).
The alloys elements are added to copper aiming at improvement of the resistance mechanics, ductility and thermal stability, electrical and thermal conductivity, beyond resistance to the corrosion.
Thus, beyond the studies of the mechanical and structural properties, they had been initiated measured of electric conductivity to the temperature of 293K, 273K, 195K and 77K aiming at a prospection of these properties in CuNiAl alloys obtained by powder metallurgy.
Butts; "Copper, the Science and Technology of the Metal, its Alloys and Compounds", ed.
K.WHITE, The Thermal and Electrical Conductivity of Copper at Low Temperatures, Australian Journal of Physics, vol. 6, p.397, 1953 [19] R.

The aim of the paper is to study an influence of low energy ball milling on structural and magnetic properties of (Fe80Nb6B14)1-xTbx (x = 0.08, 0.12) bulk nanocrystalline alloys.
The phase analysis reveals a presence of the main two magnetic compounds i.e. magnetically hard Tb2Fe14B (tetragonal structure) and relatively soft TbFe2 (cubic structure).
The detailed phase analysis of the examined bulk alloys is presented in [5].
XRD patterns for bulk and milled (Fe80Nb6B14)1-xTbx (x = 0.08) nanocrystalline alloys Fig.2 presents XRD patterns obtained for bulk and milled (Fe80Nb6B14)1-xTbx (x = 0.12) nanocrystalline alloys.
Alloys Compd. 537 (2012), p. 154