Aluminum scandium alloys

Soviet engineers first used an aluminum-scandium alloy in the MiG 29. 

Table 4.118. Properties of high-strength thermally nonstrengthened welded aluminum-scandium alloy 01570...

Scandium is used mainly as an alloying metal for aluminum (Scandium.org 2015). A minor application is in metal halide light bulbs (Gendre 2003). Another minor application for the radioactive isotope scandium-46, with a half life of 84 days, is in oil refineries to monitor the movement of fractions during the refining process. 

Aluminum- scandium master alloy ingot (AL2113-2) 98 wt.% Al 2 Wt.% Sc 174... 

Toropova. L.S., D.G. Kskin, ML. Kharaktcrova. and T.V. Dobatkina Advanced Aluminum Alloys Containing Scandium, Structure and Properties, Gordon and Breach Science Publishers. Newark, NJ. 1998. 

Keywords Amorphization, aluminum alloys, scandium, rare-earth metals... 

Scandium atoms in aluminum solid solution have the maximum value of binding energy with the vacancy [8] (see Tab.l) that can provide for additional strengthening for aluminum alloys containing Sc. 

Yelagin, Y.I., Zakharov, V.V. and Rostova, T.D. (1992) Aluminum alloys alloyed with scandium, Metal Science and Thermotreatment of Metals No. 1, 24-28. 

L.S. Toporova, D.G. Eskin, M.L. Kharakterova, T.V. Dobatkina, Advanced Aluminum Alloys Containing Scandium (Gordon Beach Science Publishers, The Netherlands, 1998). 

Aluminum-1% scandium master alloy ingot (AL2113-1) 99 wt.%Al l Wt.% Sc 125... 

Kramer, L.S. Tack, W.T. and Fernandes, M. (1997) Scandium in aluminum alloys. - Advanced Materials Processes., 152,4. 

Scandium. Aluminum alloys with 0.15 to 0.6% scandium have been reported in recent years. Scandium addition up to 0.6% has a dramatic influence on strength and it does not adversely affect the resistance of Al-2.5 Mg alloys to pitting. 

The properties of aluminum alloys (mechanical, physical, and chemical) depend on alloy composition and microstructure as determined by casting conditions and thermomechanical processing. While certain metals alloy with Al rather readily [9], comparatively few have sufficient solubility to serve as major alloying elements. Of the commonly used alloying elements, magnesium, zinc, copper, and silicon have significant solubility, while a number of additional elements (with less that 1% total solubility) are also used to confer important improvements to alloy properties. Such elements include manganese, chromium, zirconium, titanium, and scandium [2,10]. 

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