Influence of Heat Transfer on Determination of Transient Temperatures for Ni53.6Mn27.1Ga19.3 Shape Memory Alloy From Dilatometric Data
2009
Abstract
Martensitic phase transformation in Ni53.6Mn27.1Ga19.3 shape memory alloy is an athermal phase transformation that starts practically immediately after reaching a certain transient temperature. The final temperature is given at each point of the sample by two processes: thermal conductivity and phase transformation.
Both processes take place in tandem. The thermal expansion and calculation of the temperature fields in the dilatometer are used to determine the transient temperatures and to study the transient temperature ranges.
