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

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
Main Authors: Wenjia Wang, Jinqiang Ning, Steven Y. Liang
Format: Article
Language:English
Published: MDPI AG 2021-12-01
Series:Applied Sciences
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

Internet

https://www.mdpi.com/2076-3417/11/24/12053

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