NITINOL the shape of things to come

摘要

As a metal alloy composed of nickel and titanium in approximately equal atomic percentages, Nitinol exhibits the unique properties of super-elasticity (SE) and shape memory effect (SME). These properties are due to a phase transformation (a change in crystal structure). Below the transformation temperature the microstructure is known as martensite, while above this temperature it is known as austenite.