Abstract
? 2022To analyze the effect of thermomechanical treatment on the superelasticity, phase transition behavior and elastocaloric properties of Ti-18Zr-11 Nb-3Sn alloys, several cold-rolled sheets were annealed at temperatures between 923 K and 1173 K. With increasing annealing temperature, the precipitated Zr5Sn3 phase in the samples gradually dissolves until it completely disappears. All samples undergo strain glass behavior, and the ideal freezing temperature T0 gradually decreases from 371.3 K to 195.3 K with increasing annealing temperature. Moreover, the superelasticity and elastocaloric working window can be widened to 110 K by adjusting the annealing temperature. The elastocaloric properties of the sample were obtained with an adiabatic temperature change of 2.5 K.
NSTL
Elsevier