Relaxation mechanism of rotational type in fracture of weld joints for austenic steels

Studied is the mesoscale behavior of plastic deformation and fracture of weld joints for austenic steels. Large-scale rotational modes of deformation in heat affected zones are identified with the first stage of formation of band structures; it is related to the “traveling neck” phenomenon in the base metal. The second stage is connected with crack generation and the state of affairs in the heart-affected zone.     

Sound emission in a nonequilibrium medium from a plane surface with periodically varying temperature

Any change in temperature T of a continuous medium is accompanied by a change in its density , which gives rise to motion and, in particular, to sound emission. This question, which has been examined for the usual equilibrium medium, in [1], for instance, is extended in the present paper to the case of a nonequilibrium medium.Translated from Zhurnal Prikladnoi Mekhaniki i Tekhnicheskoi Fiziki, No. 3, pp. 195–199, May–June, 1975.     

Neutron Reflectometry in Russia: Current State and Prospects

Crystallography Reports - The review is devoted to the current state of affairs and prospects for development in the field of neutron reflectometry on the existing and future neutron sources in the...     

Electrical resistance and 1/f fluctuations in thin titanium films

The thickness of a metallic layer has been determined and the resistivity and spectral density of voltage fluctuations in thin titanium films with initial thicknesses of 5–100 nm, which were obtained by magnetron sputtering and intended for promising elements of the neutron optics, have been investigated. It has been found that a continuous metallic layer necessary for functioning is retained even in thinnest samples, and excess fluctuations of the layer resistance with the 1/f-type spectrum are observed. It has been shown that the method of measuring film resistivity can be used as effective express-method of determining the thickness of metallic nanolayers.     

Spin particles at stratified media: operator approach

The operator formalism of quantum mechanics is applied to the problem of reflection and transmission of non-relativistic spin particles at stratified media. Two basic numerical methods in optics of stratified media, the matrix method of Abeles and the formalism of Airy, have been thus generalized for non-relativistic spin particles. Such an approach provides numerical solution of the problem of interaction of a spin particle in an arbitrary state with a spin-dependent one-dimensional potential. Application of the generalized Airy's formalism to neutrons in magnetically non-collinear stratified media has been considered as an example.