Analysis of the thermal expansion characteristics of Ni53.6Mn27.1Ga19.3 alloy

Dilatation characteristics of Ni53.6Mn27.1Ga19.3 alloy were measured in the temperature range of 20–360 °C. The coefficient of thermal expansion (CTE) decreased with increasing temperature in the temperature range of the existence of martensite. Three variants of martensite transformed gradually into austenite. Analysis of the dilatation characteristics showed that compression deformation of the alloy at room temperature produces two kinds of strain.