Differential Scanning Calorimeter

Temperature can be cycled between hot and cold extremes (e.g. -100C to 100C) to measure the heat loss/gain indicative of the martensitic transformation in an SMA material in the absence of an applied stress. On cooling there is an exothermal event marking the transformation to martensite. Similarly, on heating there is an endothermic event marking the reverse transformation to austenite.