J. Phys. IV France 112 (2003) 929
Calorimetric evaluation of the Ga-Mn-Ni alloysM. Friman and M. Hämäläinen
Helsinki University of Technology, Department of Materials Science and Rock Engineering, P. O. Box 6200, 02015 Hut, Finland
Thermodynamic properties of the Ga 20.33-Mn 28.73-Ni 50.94 alloy were studied using thermodynamic calculations and differential scanning calorimetric (DSC) measurements. The Ga 20.33-Mn 28.73-Ni 50.94 alloy had two step martensite austenite transformation at T = 343... 413 K. Measurements were carried out using two heating rates, 0.2 and 1.0 K/min. Calculated transformation temperatures with constant gallium amount, at%, were compared to experimental results at the same composition. Transformation energies and phase transformation temperatures obtained were -7.92 J/g at 0.2 K/min and -9.80 J/g at 1.0 K/min.
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