The simultaneous influence of hydrogen H and ultrasound deformation on internal friction Q ⁻¹ and dynamic elastic modulus E of intermetallic Ti₃Al alloy after cutting and polishing were studied. The relaxation maximum of internal friction Q ⁻¹ _M1 at temperature Т _М1 ≈ 398 К, conditioned by the mechanism caused by reorientation interstitial atoms in dumbbell configurations H-H was discovered. Internal friction maximum Q ⁻¹ _M2 in intermetallic Ti₃Al at temperature T _M2 ≈ 439 K was discovered with an activation energy H ₂ = 0.86±0.1 eV. 2D and 3D atomic force microscopy microstructure images of Ti (VT8) alloy after mechanical and thermal treatment are presented. Strengthening of Ti alloys is related to the cooperation of dislocations with point defects.

In this work, after electron irradiation and X-ray, the outcomes of the evaluation dynamic characteristics of interstitial atoms Si _j , vacancy V, and O-complexes were evaluated to account for the annealing conditions to derive specific structural defects in the SiO₂/Si wafer. A non-destructive method, which allows the determination of the internal friction difference ΔQ ⁻¹ /Q ⁻¹ ₀ of the elastic vibration of structural defects of dislocations with density N _D and the depth of the broken layer h _b , is offered for the SiO₂/Si wafer. The method was developed, the installation was designed and manufactured for the excitation and registration of damped bending resonant oscillations in a SiO₂/Si disc-shaped wafer with a thickness h _SiO2 ≈ 100 nm, h _is = 300 ÷ 500 × 10³ nm, and diameter D = 60 ÷ 100 × 10⁻³ m to measure the structurally sensitive internal friction Q ⁻¹ in vacuum P ≈ 10⁻² Pa. Measurement of the internal friction background Q ⁻¹ ₀ at harmonic frequencies f ₀ and f ₂ allowed us to experimentally determine the nodal lines of the oscillating disks.

The temperature dependence of internal friction Q ⁻¹ and elastic modulus Е (‘indicatory surface of anelastic-elastic body’) of Ag_0.8Zn_0.2 alloy was studied. After electron irradiation, sharp exponential growth of internal friction background Q ⁻¹ _b was observed at temperatures T > 610 K. The effect of radiation exposure on the temperature dependence of internal friction Q ⁻¹ and elastic modulus Е of Ag_0.8Zn_0.2 alloy, which is ordered, was studied. The temperature intervals of formation and rearrangement of the short-range order were determined. The influence of electron irradiation and thermomechanical treatment on the short-range ordering processes of AgZn solid solutions was studied. After electron irradiation, the temperature dependence of internal friction Q ⁻¹ and elastic modulus Е (‘indicatory surface of anelastic-elastic body’) of Ag_0.8Zn_0.2 alloy revealed internal friction maximum Q ⁻¹ _М1 at temperature T _М1 ≈ 560 K.

A non-destructive method for the technological control of the structure defects in SiO 2 + Si wafers by measuring the internal friction background difference on the nearby harmonics f 1 and f 2 after mechanical and heat treatments.