Moscow, Moscow, Russian Federation
Moscow, Moscow, Russian Federation
The authors present their own and literature data on the characteristics of elastic properties of crystals of biocompatible alloys based on titanium nickelide (nitinol) TiNi with shape memory, which have been widely used in science, technology and medicine. Elastic constants cij, malleability coefficients sij, Poisson coefficients μmin, μmax, <µ> and elastic anisotropy A, obtained experimentally and computationally, were evaluated.The numerical values of the studied parameters are analyzed in detail from the point of view of descriptive statistics. To visualize the differences in elastic characteristics, “box and whiskers” diagrams and a diagram with areas are used. Knowledge of the elastic constants of the TiNi crystal lattice and alloys based on it made it possible to calculate the values of macroscopic elastic modules E and G, the Poisson's ratio μ and their orientation dependence. Based on the data analysis, it is concluded that the low level of elastic properties of TiNi (nitinol) based alloys can be used, for example, in the development of bionic prostheses for medicine.
biocompatible superelastic shape memory alloys, TiNi, elastic constants, Poisson's ratio, auxetics
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