Abstract
A welding window is one of the key concepts used to select optimal regimes for high-velocity impact welding. In a number of recent studies, the method of smoothed particle hydrodynamics (SPH) was used to find the welding window. In this paper, an attempt is made to compare the results of SPH simulation and classical approaches to find the boundaries of a welding window. The experimental data on the welding of 6061-T6 alloy obtained by Wittman were used to verify the simulation results. Numerical simulation of high-velocity impact accompanied by deformation and heating was carried out by the SPH method in Ansys Autodyn software. To analyze the cooling process, the heat equation was solved using the finite difference method. Numerical simulation reproduced most of the explosion welding phenomena, in particular, the formation of waves, vortices, and jets. The left, right, and lower boundaries found using numerical simulations were in good agreement with those found using Wittman’s and Deribas’s approaches. At the same time, significant differences were found in the position of the upper limit. The results of this study improve understanding of the mechanism of joint formation during high-velocity impact welding.
Highlights
High-velocity impact welding is one of the best methods for joining dissimilar materials
Among the pioneering studies in which successful attempts were made to determine the boundaries of the weldability window, it is worth highlighting the studies of Wittman [1] and Deribas [2]
The estimation of time which material spent in the molten state is of fundamental importance to assess the upper limit of welding
Summary
High-velocity impact welding is one of the best methods for joining dissimilar materials. Among the pioneering studies in which successful attempts were made to determine the boundaries of the weldability window, it is worth highlighting the studies of Wittman [1] and Deribas [2] Their approaches are still widely used in practice to select welding regimes. Adequately describing the boundaries of the weldability window, the expressions used do not give an idea of the mechanics of the deformation process near the interlayer boundary and practically do not discuss the formation of melt zones in explosively welded joints To address these issues, in recent studies [3,4,5,6] the weldability window was found using smoothed particle hydrodynamics (SPH) simulation.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
