Effect of shock-wave loading on mechanical and thermomechanical characteristics of shape-memory alloys 45Ti–45Ni–10Nb and 43Ti–46Ni–8Nb–3Zr

Resumo

This work was performed to study the behavior of 45Ti–45Ni–10Nb and 43Ti–46Ni–8Nb–3Zr (at %) shape-memory alloys (SMAs) under the effect of severe dynamic deformation to use the obtained results to develop technologies based on SMAs. Cast alloys were used for the tests. The elemental and phase compositions of the alloys in the initial state, as well as the phase composition, kinetics, and temperatures of phase transformations after heat treatment (annealing in a vacuum at 850°C for 4 h, furnace cooling) have been determined. The mechanical and thermomechanical characteristics of these alloys before and after shock-wave loading have been determined.