<prompt> NiTi alloy shows superelasticity through:Conversion from Austenite to Martensite phaseConversion from Martensite to Austenite phaseM wire phaseAustenite Martensite R phase  <response>: Superelasticity and shape memory of NiTi alloys is because of phase transformation in their crystal structures when cooled from the stronger, high temperature form Austenite to the weaker low temperature form Martensite. 