Developing a numerical model of pore formation during welding of aluminum and its alloys using a comprehensive approach

Currently, there are several alternative technological methods for arc welding of aluminum and its alloys, but there are no comparative performance criteria for alternative processing methods as applied to a specific welding procedure and joint design. A comprehensive approach is widely used in the metallurgical and chemical industries for the calculation of closed systems. It is based on the mass and energy balance equations describing a process under consideration. This paper deals with a model of during aluminum welding based on a comprehensive approach. A distinctive feature of the pore formation model in welding aluminum is to establish boundary locking conditions for the pore formation process in space and time. The developed model was used to estimate the tendency to form pores for various regimes of nonconsumable-electrode arc welding of aluminum. The results of the study will be useful in the development of welding techniques.

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