Shape Memory Effect: "Shape Memory" describes the effect of restoring the original shape of a plastically deformed sample by heating it.
Superelastic Effect: An elastic (reversible) responses to an applied temperature, caused by a phase transformation between the austenitic and martensitic phases of a crystal.
MS: The starting temperature of SMA transform from austenite to martensite
MF: The ending temperature of SMA transform from austenite to martensite
AS: The starting temperature of SMA transform from martensite to austenite
AF: The ending temperature of SMA transform from martensite to austenite