Gallery: How to Make Super-Strong, Super-Flexible Metals

From Wired Discoveries:

Researchers at Caltech are pioneering new ways to make superstrong metals that are twice as tough as titanium, and twice as elastic. These "metallic glass" composites are so strong a 3mm rod can support a 2-ton truck and they bend instead of snapping like most other metals of their kind, which are called "glass metals." The new metals can potentially be used in industries from aerospace to automotive, as well as in consumer electronics. Because the alloy is so strong, less metal is needed, so spacecraft and cars would be lighter. Glass metals have been around since the '50s. They get their exceptional strength from their disordered atomic structure (hence the "glass" name), whereas most metals have a weaker, crystalline atomic structure that follows a pattern. The downside of the glass structure is that it makes the metal brittle when it's put under too much pressure. The new composites have dendrites of normal crystalline metal structures running through the glass component, which greatly increases the pressure threshold of the alloys.

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