Experimental Study of Thermomechanical Processes: Laser Welding and Melting of a Powder Bed

In this study, an experimental approach was developed to analyze and better understand the laser welding and melting of a powder bed process. Different optical diagnostics tools (high-speed camera, infrared camera, pyrometer, etc.) were applied to measure different physical quantities (molten pool m...

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Published in	Crystals (Basel) Vol. 10; no. 4; p. 246
Main Authors	Saadlaoui, Yassine, Sijobert, Julien, Doubenskaia, Maria, Bertrand, Philippe, Feulvarch, Eric, Bergheau, Jean-Michel
Format	Journal Article
Language	English
Published	Basel MDPI AG 01.04.2020 MDPI
Subjects	Cameras Computer simulation Engineering Sciences High speed cameras Infrared cameras Laser beam welding laser welding Lasers Melting melting of a powder bed Metals molten pool Morphology optical diagnostics Powder beds Residual stress residual stresses Scrap Simulation Studies Temperature distribution temperature field Thermomechanical treatment molten pool optical diagnostics laser welding melting of a powder bed temperature field residual stresses
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ISSN	2073-4352 2073-4352
DOI	10.3390/cryst10040246

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Abstract	In this study, an experimental approach was developed to analyze and better understand the laser welding and melting of a powder bed process. Different optical diagnostics tools (high-speed camera, infrared camera, pyrometer, etc.) were applied to measure different physical quantities (molten pool morphology, temperature field, residual stresses, and distortions). As a result, measurements during the laser welding process facilitated the building of a database of experimental results (experimental benchmarks). The study of the melting of a powder bed enabled a better understanding of the physics related to the formation and behavior of the molten pool. These results can be used by researchers to improve and validate numerical simulations of these processes.
AbstractList	In this study, an experimental approach was developed to analyze and better understand the laser welding and melting of a powder bed process. Different optical diagnostics tools (high-speed camera, infrared camera, pyrometer, etc.) were applied to measure different physical quantities (molten pool morphology, temperature field, residual stresses, and distortions). As a result, measurements during the laser welding process facilitated the building of a database of experimental results (experimental benchmarks). The study of the melting of a powder bed enabled a better understanding of the physics related to the formation and behavior of the molten pool. These results can be used by researchers to improve and validate numerical simulations of these processes.
Author	Feulvarch, Eric Sijobert, Julien Doubenskaia, Maria Bergheau, Jean-Michel Bertrand, Philippe Saadlaoui, Yassine
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SubjectTerms	Cameras Computer simulation Engineering Sciences High speed cameras Infrared cameras Laser beam welding laser welding Lasers Melting melting of a powder bed Metals molten pool Morphology optical diagnostics Powder beds Residual stress residual stresses Scrap Simulation Studies Temperature distribution temperature field Thermomechanical treatment
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Title	Experimental Study of Thermomechanical Processes: Laser Welding and Melting of a Powder Bed
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