Features of the Mechanical Behavior and Structure of Ferromagnetic Shape Memory Nanocomposites

Abstract

In nanocomposite based on FeNiCoTi alloy, it was found that the stresses $(0^{SE})$ for the accumulation of superelastic deformation due to $\gamma\leftrightarrow\alpha$ martensitic transformation decrease, while the superelastic deformation $(\varepsilon^{SE})$ increases with an increase in the $Tc-Ms$ temperature interval and a corresponding decrease in the temperature hysteresis ($\Delta$T) of martensitic transformation as a result of a decrease in volume effect ($\Delta$V/V). The change in properties is associated with changes in the mechanism of martensitic transformation, as well as in the structure of FeNiCoTi alloy based nanocomposite containing coherent particles of $\gamma$’- phase (Ni, $Co)_{3}$.