Elastic Behavior of the Ti-13Nb-13Zr Alloy Obtained by Anelastic Spectroscopy
Measurements of anelastic relaxation (internal friction and frequency) as a function of temperature were carried out in samples of Ti-13Nb-13Zr using two experimental apparatus: Flexural Vibration of the first tone of samples in Acoustic Elastometer System (Vibran Technology®) operating in a kilohertz bandwidth, and Torsional Vibration of the samples in Kê-type Torsion Pendulum operating in a hertz bandwidth. Experimental spectra of anelastic relaxation were determined in the temperature range from 300 K to 450 K for a heating rate of 1K/min under pressure of 10-5 Torr, in both apparatus. The results show a relaxation structure strongly dependent on the microstructure of the material. The dynamical elastic modulus (E) of Ti-13Nb-13Zr alloy can be determined by flexural vibrations by frequency (f) measurements (f E1/2). The anelastic relaxation spectrum of Ti-13Nb-13Zr alloy was a function of temperature obtained by torsional vibrations, not revealing the presence of interstitial solutes in solid solution in the temperature range of measurements.
Prof. Andreas Öchsner, Prof. Graeme E. Murch and Ali Shokuhfar
O. Florêncio et al., "Elastic Behavior of the Ti-13Nb-13Zr Alloy Obtained by Anelastic Spectroscopy", Defect and Diffusion Forum, Vols. 283-286, pp. 84-89, 2009