Types of spatter and their features and formation mechanisms in laser powder bed fusion additive manufacturing process
Types of spatter and their features and formation mechanisms in laser powder bed fusion additive manufacturing process
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DOI：
10.1016/j.addma.2020.101438
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发表时间：
2020-12
影响因子：
11
通讯作者：
Zachary A. Young;Qilin Guo;N. Parab;Cang Zhao;Minglei Qu;Luis I. Escano;K. Fezzaa;W. Everhart;T. Sun;Lianyi Chen
中科院分区：
文献类型：
--
作者：
Zachary A. Young;Qilin Guo;N. Parab;Cang Zhao;Minglei Qu;Luis I. Escano;K. Fezzaa;W. Everhart;T. Sun;Lianyi Chen
在激光粉床熔化(LPBF)添加剂制造过程中，飞溅会导致缺陷形成、粉末再分布和污染。区分不同类型的飞溅并了解其特征和形成机理是至关重要的。这项工作通过现场高速高能X射线成像揭示了LPBF过程中五种独特类型的飞溅的特征和形成机制。在LPBF测试中观察到的飞溅是通过它们的速度、大小和方向来量化的。确定了每种类型的飞溅的不同的可量化特征。揭示了激光功率、扫描速度和环境压力对飞溅形成和特征的影响。绘制了AlSi10 Mg合金的溅射形成图。
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.