2.4. LATENT HEAT
A final phenomenon unique to the first-order phase transition is the release of latent heat ‏⁵⁶. The latent heat is
defined as the quantity of heat that must be added to a system to transfer one molecule from one phase to another,
while keeping the temperature of the system constant [36, 12]. Shape memory alloys experience a release of latent
heat in the martensitic phase transformation.
http://www.caam.rice.edu/~reynoldd/Papers/thermo_mod...