About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Quantitative Analysis of In-situ Pore Removal in Porous L-PBF Substrates |
Author(s) |
Garrett Mathesen, Conor Porter, Fred M. Carter, Jian Cao |
On-Site Speaker (Planned) |
Garrett Mathesen |
Abstract Scope |
While laser powder bed fusion (L-PBF) is a popular method of metal additive manufacturing, it is still limited in adoption by certain industries due to porosity created during the manufacturing process. Post-processing methods of porosity removal or closure exist, such as hot isostatic pressing, but may have limited effectiveness. This work details quantitative analysis of the in-situ porosity removal process in AlSi10Mg for L-PBF utilizing high speed operando X-ray imaging. The pore removal process was observed through laser scanning of porous substrates both with and without powder with variations in the scan speed and laser power. Image processing techniques were used to classify and calculate pore metrics to determine the count, size, and depth of the removed pores in the X-ray images and the change in the relative density of the part for different parameter sets. These observations show the possibility of utilizing these removal processes during successive layer scanning. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |