Nitinol is a unique alloy made of nickel and titanium that exhibits one of the most remarkable behaviors in materials science. Its defining feature is shape memory, the ability to be deformed at one temperature and then return to a preset shape when heated. This transformation comes from a reversible shift between two crystal structures known as martensite and austenite. The change occurs with precision and reliability, giving nitinol an almost lifelike response to temperature. Another important

This alloy remembers its shape, and what's your superpower? More about nitinol: http://bit.ly/2rl0PrD | MEL Science

Shape Memory Alloys (SMAs), such as Nitinol, are unique metals that can be bent or deformed at low temperatures but return to their original, pre-set shape when heated. This remarkable behavior is due to a solid-state phase transformation between two distinct crystal structures: martensite and austenite. At cooler temperatures, the alloy exists in the martensite phase — a softer, more flexible structure with lower symmetry. In this state, the material can be reshaped without causing permanent ch

An experiment using Nitinol, which has the "shape memory effect" of returning to its original shape due to heat. #science #engineering #stemeducation | EngineerKnow

322K views · 222 reactions | Nitinol, a “memory” metal that can remember its original shape when heated, is an industrial gem that will play a key role in NASA’s next mission to Mars. | Verge Science | Facebook