Analytical Prediction of Balling, Lack-of-Fusion and Keyholing Thresholds in Powder Bed Fusion

This paper proposes analytical modeling methods for the prediction of balling, lack-of-fusion and keyholing thresholds in the laser powder bed fusion (LPBF) additive manufacturing. The molten pool dimensions were first predicted by a closed-form analytical thermal model. The effects of laser power i...

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Bibliographic Details

Published in:	Applied Sciences
Main Authors:	Wenjia Wang, Jinqiang Ning, Steven Y. Liang
Format:	Article
Language:	English
Published:	MDPI AG 2021-12-01
Subjects:	analytical prediction boundary heat transfer powder size distribution lack of fusion balling behavior keyholing defect
Online Access:	https://www.mdpi.com/2076-3417/11/24/12053