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Home | Headlines | New Alloys/Welding Methods

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New Alloys/Welding Methods

- 6/17/2009
Midland Park, NJ – Aluminum specialist Alcan is working to develop new alloys and new processes to better compete with composite materials.

The latest generation of aluminum-copper-lithium (often referred to as aluminum-lithium) alloys are 4 percent less dense and 30 percent stronger than incumbent alloys. Low-density alloys are also more resistant to corrosion. Alcan is also working on alloys that are compatible with composites.

Alcan has found that combined with a new shape of stringer, dubbed “top-hat,” friction stir welding can yield panels that are 15 percent lighter and 14 percent stronger than conventional panels. Also, adding a “step” between two conventional stringers makes crack propagation slower by half.

Read the full story at ainonline.com.
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