Low-Temperature Crack Resistance of Cryogenic Structures

Strength of Materials - The versions of nonlinear defining relations and characteristics of nonlinear fracture mechanics controlling and simulating the service life, survivability, and durability...     

Effect of modifying microadditions on the corrosion resistance of welded joints in low‐alloy steel

Results of investigation of the effect of the cooling rate on the structure and mechanical properties of metal in plasma quenching are presented.     

Phase Composition of Heat-Treatment Products in the ZrO(OH)2–Y(OH)3–FeOOH System

The phase composition of the heat-treatment products in the ZrO(OH)₂–Y(OH)₃–FeOOH system is determined as a function of the precipitation procedure and calcination temperature (620–1570 K) for the compositions 0.97ZrO₂· xY₂O₃· yFe₂O₃(x+ y= 0.03; x= 0, 0.01, 0.015, 0.02, 0.03) and (1 – x– y)ZrO₂· xY₂O₃· yFe₂O₃(x= y= 0.02, 0.025, 0.03, 0.04). At a given ZrO₂: stabilizer ratio, partial substitution of Fe³⁺for Y³⁺increases the degree of ZrO₂stabilization and retards the low-temperature degradation of the material.     

Topological Surface States of Multicomponent Thermoelectrics Based on Bismuth Telluride

Semiconductors - The surface states of Dirac fermions in p-Bi2Te3, p-Bi2 –xSbxTe3 –ySey, and p-Bi2 –x–ySnxGeyTe3 thermoelectrics were studied and its topological...     

Effect of the mode of flow in the initial boundary layer on the turbulence attenuation effect in a jet exposed to acoustic irradiation

Based on an analysis of experimental data on high-frequency acoustic excitation of turbulent jets, we investigate the effect of the mode of flow in the boundary layer of the outlet section of the nozzle on realization of the turbulence attenuation effect. It is claimed that high-frequency acoustic excitation of jets leads to a decrease in turbulent fluctuations on the axis of the initial stretch of the jet and to reduction of noise in both initially laminar and initially turbulent boundary layers at the nozzle outlet. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 71, No. 1, pp. 81–85, January–February, 1998.