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A CFD model of the laser, coaxial powder stream and substrate interaction in laser cladding

Research output: Contribution to journalJournal article

Published

Journal publication date2010
JournalPhysics Procedia
Journal numberB
Volume5
Number of pages10
Pages337-346
Original languageEnglish

Conference

Conference6th International Conference on Laser Assisted Net Shape Engineering
CityErlangen
Period21/09/1024/09/10

Abstract

In laser cladding, the interaction of the substrate material, the laser beam and the powder stream play important roles in determining how the material is deposited. Previous models of the coaxial powder stream have concentrated either on mass flow dynamics or stream heating, neglecting the effect of the substrate. In this work, a comprehensive numerical model that considers the important parameters of the powder stream, the laser beam and the substrate material, is developed. It is clear from the work that the full three-way interaction of these elements, as in real processing situations, is necessary to accurately and reliably predict particle heating and effective fusion into the melt pool.