  Equiatomic nickle-titanium (NiTi) is investigated to determine the
consequences of point defects on the Martensitic phase transformation. Using
molecular dynamics (MD) simulations, NiTi with 0.1%, 0.5%, 1%, 2%, and 3% of
Schottky-type defects (vacancies) have been modeled with the temperature of
structural transformation elucidated. Increasing the concentration of point
defects leads to this transformation occurring at lower temperatures than the
perfect structure while the final monoclinic unit cell angle ($\gamma$)
substantially decreases. Modeling anti-site defects at the 0.1%, 0.5%, and 1%
concentration level indicates the cubic to monoclinic structural transformation
temperature decreases even faster with a more dramatic change in $\gamma$
compared to the vacancy structure. The change in this Martensitic
transformation stems from pinning due to the structural defects.
