Question

what is the bonding mechanism of Shape memory alloy​

Answer 1

Answer:

Shape memory alloys are the closest thing we have to that. SMAs are a class of smart material that can remember their shape. You bend them and they will return to their original shape when heated (or experience other stimuli, like a magnetic field for magnetic shape memory alloys). Additionally, SMAs are extremely elastic (that means they can bend far and return to their original shape, like a rubber band).

When the alloy is heated, it goes through transformation from martensite to austenite. In the austenite phase, the memory metal "remembers" the shape it had before it was deformed. From the stress vs. temperature graph below, one can see that at low stress and low temperature, martensite exists.

Answer 2

• As we know that the metal can be bent or stretched if a shape memory alloy is in its cold state.
• Until heated above the transition temperature the shape memory will hold those shapes.
• The shape changes to its original when heat is applied.
• Alloy will retain the shape when the metal cools down.

• When the alloy is heated, Alloy metal goes through a transformation from martensite to austenite if heat is applied.