Types of spatter and their features and formation mechanisms in laser powder bed fusion additive manufacturing process

By Zachary A. Young, Qilin Guo, N. Parab, Cang Zhao, Minglei Qu, Luis I. Escano, K. Fezzaa, W. Everhart, T. Sun, Lianyi Chen. Additive Manufacturing, 2020

219 citations recorded by the source corpus.

Abstract Spatter causes defect formation, powder redistribution and contamination in laser powder bed fusion (LPBF) additive manufacturing process. It is critical to distinguish different types of spatter and understand their features and formation mechanisms. This work reveals the features and formation mechanisms of five unique types of spatter during the LPBF process by in-situ high-speed, high-energy x-ray imaging. Spatters observed during LPBF testing are quantified by their speed, size, and direction. Distinct quantifiable characteristics for each type of spatter are identified. Effects of the laser power, scan speed, and ambient pressure on spatter formation and features are unraveled. A spatter formation map for AlSi10Mg alloy is constructed.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/e6d6518f8f3022d6aabed76618857b499c8a78cf

Citations in the corpus

• In-situ measurement and monitoring methods for metal powder bed fusion: an updated review (2021, unknown): “…a variations of the time a pixel temperature stays above a given threshold (Mohr et al In-situ x-ray video imaging confirmed aforementioned res-ults and enabled more in depth insights about the by-product properties and origination mechanisms (Zhao et al 2017, Leung et al 2018, Young et al 2020).”