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Scandium and Scandium Alloys

Scandium and Scandium Alloys. James Addison MEEN 3344 Introduction to Material Science Fall 2008. Scandium (Sc). Scandium is Latin for Scandinavia, where it was first discovered in 1869

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Scandium and Scandium Alloys

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  1. Scandium and Scandium Alloys James Addison MEEN 3344 Introduction to Material Science Fall 2008

  2. Scandium (Sc) • Scandium is Latin for Scandinavia, where it was first discovered in 1869 • Scandium is a rare, hard, silvery, rough, very dark metallic element that develops a slightly yellowish or pinkish tint when exposed to air • First prepared in its metallic form in 1937

  3. Applications Night Guard™ Features • Strong, Lightweight Scandium Alloy Frames • Mainly used in aluminum alloys for • Aerospace components • Sports equipment (bikes, golf clubs, bats, firearms) • Also used in high intensity lights • Scandium Iodide added to mercury vapor lamps for TV cameras • Some types of light bulbs According to http://www.scandium.org, scandium provides the highest increment of strengthening per atomic percent of any alloying element when added to aluminum

  4. Why Use Scandium? • Titanium is similar in weight and strength and is much more common (cheaper) than scandium. • When added to aluminum, scandium lowers the rate of recrystallization and grain-growth in weld heat-affected zones. • Scandium does increase an aluminum alloy strength somewhat, but is primarily added for the benefit of stronger welds. • Scandium-aluminum alloys originally used on Russian submarine-launched ballistic missiles • Made strong missile nose cones and strong tail fin welds enabling missiles to pierce arctic ice caps when launched from below the surface

  5. Material Cost

  6. Thank you for your time Any Questions? References http://en.wikipedia.org/wiki/Scandium http://www.scandium.org/index.html http://www.supercrossbmx.com/R&D-03Scandium.pdf http://www.smith-wesson.com

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