Physics of humping formation in laser powder bed fusion

•Implementation of ray tracing heat source in the CFD model•Good consistency between simulations and experiments•Humping defects in samples fabricated at high laser power and scanning speed•Discussion on the roles of various force on humping formation Despite of the promising attributes of laser pow...

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Bibliographic Details
Published in:	International journal of heat and mass transfer Vol. 149; p. 119172
Main Authors:	Tang, C., Le, K.Q., Wong, C.H.
Format:	Journal Article
Language:	English
Published:	Oxford Elsevier Ltd 01.03.2020 Elsevier BV
Subjects:	Additive manufacturing Austenitic stainless steels Capillary flow Computational fluid dynamics Computer simulation Contact angle Flow stability Flux density Humping Industrial applications Laser powder bed fusion Lasers Porosity Powder beds Rapid prototyping Ray tracing algorithm Recoil Scanning Shear forces Surface defects Surface morphology Surface roughness Surface stability Surface tension Swelling Laser powder bed fusion Ray tracing algorithm Additive manufacturing Computational fluid dynamics Surface morphology Humping
ISSN:	0017-9310, 1879-2189
Online Access:	Get full text
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