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Thermoelasticity and hysteresis of martensitic transformations in shape memory alloys. III. Features of the hysteretic behavior by V. Prieb 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. More about this in my monograph, published in November 2020: "The concept of dual-energetic martensite (CODEM) for shape memory phenomena", PDF-file |