Generalized susceptibility of dislocation in ferroelectrics

Bending vibrations of dislocations in ferroelectric crystals are investigated. Vibration spectrum is shown to consist of two branches: “quasi-acoustic” (ω → 0 at q → 0, where ω, q - are frequency and wave vector, respectively) and “quasi-optical” (ω ≠ 0 at q = 0). Generalized susceptibility of dislocation is calculated. It is shown that energy dissipation at crystal polarization vibrations, accompanying dislocation vibrations, has a noticeable influence on dislocational vibrations damping.     

Effect of prior heat treatment on cyclic endurance of sheet titanium alloys of various strength groups

Shaping operations including bending and stretching deformation are often used in producing members of thin-wall titanium structures of aircraft. At the same time published sources do not give much data on the effect of the degree of deformation on the cyclic endurance of sheet titanium alloys. In addition the problem of how much alloys of medium and high strength can be deformed without diminishing their operating capacity still remains open. The present paper is devoted to the possibility of deforming sheet titanium alloys of different strength groups by bending and stretching without reducing their cyclic life. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 15–16, December, 1998.     

An investigation of the kinetics of structure transformations and phase transition in nickel using acoustic methods

Results are given of experimental investigation of the temperature dependence of the acoustic and acoustic-emission properties of nickel in the vicinity of magnetic phase transition (Curie point), as well as of their behavior in the process of annealing and quenching. The information content of these properties is demonstrated when investigating the evolution of nonequilibrium structures and phase transitions of metal materials.     

Repeated-static endurance of OT4 sheet alloy with an incompletely removed surface gas saturated layer

Translated from Fiziko-Khimicheskaya Mekhanika Materialov, No. 5, pp. 112–114, September–October, 1989.