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Modeling and Simulation of a Laser Deposition Process

A laser deposition process involves the supply of metallic powders into a laser-heated spot where the powder is melted and forms a melt puddle which quickly solidifies into a bead. In order to design an effective system, the laser beam, the powder beam, and their interactions need to be fully unders...

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Bibliographic Details
Main Authors: Liou, Frank, Fan, Zhiqiang, Pan, Heng, Slattery, Kevin, Kinsella, Mary, Newkirk, Joseph, Chou, Hsin-Nan
Format: Report
Language:English
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Summary:A laser deposition process involves the supply of metallic powders into a laser-heated spot where the powder is melted and forms a melt puddle which quickly solidifies into a bead. In order to design an effective system, the laser beam, the powder beam, and their interactions need to be fully understood. In this paper, the laser-material interaction within the melt pool is reported using a multi-scale model: a macroscopic model to model mass, heat, and momentum transfer. Experiments were also conducted to validate the simulation model. See also ADM002161. Presented at the Symposium on Solid Freeform Fabrication (SFF)(18th) held in Austin, TX on 6-8 August 2007. Published in the Proceedings on Solid Freeform Fabrication (SFF) (18th), p212-223, 2007. U.S. Government or Federal Rights License. The original document contains color images.