Schematic diagram of the ultrasonic measuring system.
DSC curve of the sample obtained during heating with a heating rate of . The dashed lines are tangent to the curve, the intersection of which determines the calorimetric and .
XRD patterns of the sample (a) before heating and (d) after the fifth run.
Densities of the sample before and after the heating cycles.
Changes in sound velocities during the first run with a heating and cooling rate of . The upper plot is for longitudinal wave velocity ;, the lower one is for transverse wave velocity .
(Color) Poisson’s ratios vs temperature during the measurement runs.
Young’s moduli vs temperature during the heating cycle from the (a) first run to (e) fifth run.
Compilation of the data indicated in Fig. 7 as relationship between Young’s modulus at and the run number.
Micro-Vickers hardness as a function of run number.
(Color) Dilational and transverse internal frictions vs temperature during linear heating and cooling at a rate of .
Relationship between the onset transition temperature of structural change and the run number during the heating process.
Schematic illustration of the free volume based on (a) the assumptions and (b) the simplified kinetic model for deformation.
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