The Aspects of Almg6 Aluminium Alloy Deformation Under Explosive Welding

Abstract

The paper presents the results of a study of the features of the deformation of the main plate made of AlMg6 in the process of explosion welding (with corrosion-resistant steel 08Cr18Ni10Ti). It was found that the end and edge sections of the main plate undergo severe deformation, as evidenced by the constructed maps of the distribution of residual deformations over the plate area. With an increase in the detonation velocity, an intensification of the deformation process occurs, which leads to the appearance of cracks and local spalling of plate fragments. In addition, the results of measurements of the elongation of the main plate showed that a noticeable longitudinal deformation of the plate begins approximately at a distance equal to 2/3 of the total length of the plate. The measured value of the beginning of elongation (240 ± 10 mm) with an accuracy of 95% converges with the calculated value (229 mm).

Numerical simulation study on noise pollution of the pressurized gas system in pumped storage power station

“…The system facilitates rapid start-up and smooth operation of the unit by injecting medium-pressure compressed air into the rotor chamber to pressurize the water level below the turbine, allowing the turbine to rotate in the air [5] . In this system, high-pressure air stored in the air reservoir expands and releases rapidly during exhaust pressurization and waste discharge conditions, which leads to an increase in the flow losses of the gas within the tank, resulting in a rapid decrease in temperature [6,7] . Because of the problem of pneumatic howling, it will also produce a considerable degree of noise pollution [8] .…”