This is a brief review of the Fascinating Shape Memory Alloys, commonly known as smart metal, memory metal, memory alloy, muscle wire, smart alloy. A shape memory alloy is a microtome alloy so as to remember (keeps memory) it’s initial or real shape and when heated or deformed turns in to its pre-deformed shape. Because of its unique properties, Shape Memory Alloys have found wide usage in hydraulic, pneumatic and motor-baked systems. These alloys contain applications to robots and automobile, aerospace as well as biomedical application. This article not only covers the discovery of the shape memory alloys but also the fundamental principles behind this phenomenon, the various metals and alloys exhibiting the characteristics. Physical phenomena and their applications are also discussed.

Iqra Zubair Awan and Abdul Qadeer Khan