Effect of processing gas on spatter generation and oxidation of TiAl6V4 alloy in laser powder bed fusion process

Review Chemistry, Analytical

A Review of Spatter in Laser Powder Bed Fusion Additive Manufacturing: In Situ Detection, Generation, Effects, and Countermeasures

Zheng Li et al.

Summary: Spatter, an undesired phenomenon in laser powder bed fusion (L-PBF), has a significant impact on forming quality. Research on spatter is crucial in improving L-PBF systems.

MICROMACHINES (2022)

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Article Engineering, Manufacturing

Influence of part geometry on spatter formation in laser powder bed fusion of Inconel 718 alloy revealed by optical tomography

Zhuoer Chen et al.

Summary: This study aims to track the history of metal powder during the Laser Powder Bed Fusion (L-PBF) process. Experimental strategies were developed using novel design of powder-capturing containers and online monitoring. The results showed that the geometry of the containers influenced the degradation of reused powder, and the analysis of XPS results agreed with the OT data analysis.

JOURNAL OF MANUFACTURING PROCESSES (2022)

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Article Materials Science, Multidisciplinary

Oxygen balance during laser powder bed fusion of Alloy 718

Camille Pauzon et al.

Summary: This study focused on the characterization of powder degradation during L-PBF of Alloy 718, revealing the significant impact of surface-to-volume ratio of built components on powder quality and oxide formation.

MATERIALS & DESIGN (2021)

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Article Materials Science, Multidisciplinary

Degradation of AlSi10Mg powder during laser based powder bed fusion processing

Ahmad Raza et al.

Summary: The study found that AlSi10Mg powder undergoes oxidation aging during AM processing, with the powder surface covered by a uniform oxide layer, affecting the reusability of the powder. The analysis showed an increase in volume fraction of heavily oxidized spatter particles and the formation of oxide scale on spatter particles.

MATERIALS & DESIGN (2021)

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Article Engineering, Industrial

Influence of gas atmosphere (Ar or He) on the laser powder bed fusion of a Ni-based alloy

S. Traore et al.

Summary: The shielding atmosphere has a significant impact on L-PBF single beads, with bead dimensions remaining constant and fewer, smaller spatters produced under a helium atmosphere, especially at high volume energy densities.

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY (2021)

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Article Materials Science, Multidisciplinary

Spatter reduction by multi-beam illumination in laser powder-bed fusion

Marcel Slodczyk et al.

Summary: The application of multi-beam illumination can reduce the number of spatter particles at higher applied power and increase the build-up rate.

MATERIALS & DESIGN (2021)

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Article Materials Science, Multidisciplinary

Effect of AlSi10Mg0.4 long-term reused powder in PBF-LB/M on the mechanical properties

Tobias Fiegl et al.

Summary: Laser-based powder bed fusion is a well-established additive manufacturing process, but reusing powder for a long time can result in increased porosity and decreased mechanical properties of the parts. Powder degradation significantly affects the quality of additively manufactured parts.

MATERIALS & DESIGN (2021)

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Article Engineering, Manufacturing

Reduction of incandescent spatter with helium addition to the process gas during laser powder bed fusion of Ti-6Al-4V

C. Pauzon et al.

Summary: The study found that using pure helium or a mixture of helium and argon during laser powder bed fusion can significantly reduce the generation of hot spatters, and the addition of helium can also cool the spatters more quickly, reducing the risk of powder bed degradation.

CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY (2021)

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Article Materials Science, Multidisciplinary

Reduction of Spatter Generation Using Atmospheric Gas in Laser Powder Bed Fusion of Ti-6Al-4V

Hiroki Amano et al.

Summary: Laser powder bed fusion (LPBF) is a promising additive manufacturing technology, but the generation of spatters can affect the quality of fabrication. Research has shown that changing the atmospheric gas can significantly suppress spatter generation, highlighting the importance of considering fabrication atmosphere in AM technology.

MATERIALS TRANSACTIONS (2021)

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Review Materials Science, Multidisciplinary