If you want to cool something hot

Do not put in a refrigerator but leave it in the room temperature.That is why dislocations cannot move in very low temperatures.Hence, the time for necessary to transform increases although the more nuclei are created in the upper level of the critical radius. We care about dislocation move a lot. An interesting example that water cools(to transorm into ice) faster in the -1 celcius than -10 celcius. What a world eh!