Effect of Mechanical Properties of Materials on Wave Formation in Explosive Welding
B. S. Zlobin1, V. V. Kiselev1, A. A. Shtertser2
1Design and Engineering Branch of the Lavrent’ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2Lavrent’ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: сварка взрывом, параметры соударения, волнообразование, модель Ландау, число Рейнольдса, число Струхаля, explosive welding, collision parameters, wave formation, Landau model, Reynolds number, Strouhal number
Abstract
Experiments on the explosive welding of low-plasticity steels through thin plastic layers show that, aside from the geometric features of collision (thickness and angle of collision of plates and contact point velocity), the dimensions of waves arising in the junction region are also highly affected by the mechanical properties of welded materials (hardness, density, and sound velocity). It is determined that waves of different dimensions can be formed under the same conditions, but their length lies in a certain range of values. On the basis of the resulting experimental data and with involvement of the Landau model, which describes the instability of a steady flow of viscous fluid, expressions for estimating the top and bottom boundaries of wavelengths are constructed with allowance for geometric parameters of collision and mechanical properties of colliding metal plates.
|
