Dr. V. Prieb
Technical Physics -- November 1996 -- Volume 41, Issue 11, pp. 1141-1144
Thermoelasticity and hysteresis
of martensitic transformations in shape memory alloys.
III. Features of the hysteretic behavior
by V. Prieb
Abstract: The features of the thermal and ferroelastic hysteresis arising in partial cycling and after a cyclic ferroelastic
straining of single crystals of various shape memory alloys are investigated by means of calorimetry and mechanical
It was found the return point memory effect (known as the SMART effect) in partial cycles of revers transformation in the absence of external
stresses, the shift of the temperatures of the reverse transformation during the first heating in the free state
in samples subjected to a ferroelastic cyclic prestraining (known as the hysteresis-broadening or martensit stabilization effect),
the degeneration of the ferroelastic hysteresis during cycling with a spiral-like decreasing of strain amplitude,
into a single line corresponding to the elasticity of martensite, and the similarity
of the internal hysteresis loops is destroyed.
Based on the experimental studies, general rules are formulated
for the evolution of the ``internal'' trajectories. Such rules are needed for modeling the change in hysteresis
of the shape memory effect.
"Calorimetry of shape memory alloys" - collected articles (pdf-file)