Laser assisted powder bed fusion of hypereutectic Al-Si using ultra-short laser pulses at different pulse durations (Conference Presentation)

2020 ◽  
Author(s):  
Tobias Ullsperger ◽  
Gabor Matthäus ◽  
Lisa Kaden ◽  
Brian Seyfarth ◽  
Dongmei Liu ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Powder Bed Fusion ◽  
Powder Bed ◽  
Short Laser Pulses

Laser powder bed fusion of glass: a comparative study between CO2 lasers and ultrashort laser pulses

2020 ◽  
Author(s):  
Brian Seyfarth ◽  
Lisa Schade ◽  
Gabor Matthäus ◽  
Tobias Ullsperger ◽  
Nils Heidler ◽  
...  
Keyword(s):  
Comparative Study ◽  
Laser Pulses ◽  
Ultrashort Laser Pulses ◽  
Powder Bed Fusion ◽  
Co2 Lasers ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Ultrashort Laser

Grain Morphology and Texture Development in a Co-Cr-Mo Alloy Fabricated by Powder Bed Fusion with an Electron Beam

2019 ◽  
Author(s):  
Yufan Zhao ◽  
Yuichiro Koizumi ◽  
Kenta Aoyagi ◽  
Daixiu Wei ◽  
Kenta Yamanaka ◽  
...  
Keyword(s):  
Electron Beam ◽  
Grain Morphology ◽  
Texture Development ◽  
Powder Bed Fusion ◽  
Powder Bed

scholarly journals On the Relevance of Volumetric Energy Density in the Investigation of Inconel 718 Laser Powder Bed Fusion

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 538 ◽  
Author(s):  
Fabrizia Caiazzo ◽  
Vittorio Alfieri ◽  
Giuseppe Casalino
Keyword(s):  
Surface Roughness ◽  
Energy Density ◽  
Process Parameters ◽  
Vickers Hardness ◽  
Powder Bed Fusion ◽  
Processing Conditions ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Fractional Density ◽  
Experimental Variation

Laser powder bed fusion (LPBF) can fabricate products with tailored mechanical and surface properties. In fact, surface texture, roughness, pore size, the resulting fractional density, and microhardness highly depend on the processing conditions, which are very difficult to deal with. Therefore, this paper aims at investigating the relevance of the volumetric energy density (VED) that is a concise index of some governing factors with a potential operational use. This paper proves the fact that the observed experimental variation in the surface roughness, number and size of pores, the fractional density, and Vickers hardness can be explained in terms of VED that can help the investigator in dealing with several process parameters at once.

Heat source model calibration for thermal analysis of laser powder-bed fusion

2020 ◽  
Vol 106 (7-8) ◽  
pp. 3367-3379 ◽  
Author(s):  
Shahriar Imani Shahabad ◽  
Zhidong Zhang ◽  
Ali Keshavarzkermani ◽  
Usman Ali ◽  
Yahya Mahmoodkhani ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Heat Source ◽  
Model Calibration ◽  
Source Model ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Heat Source Model ◽  
Powder Bed

scholarly journals Improvement of polymer properties for powder bed fusion by combining in situ PECVD nanoparticle synthesis and dry coating

2021 ◽  
Author(s):  
Juan S. Gómez Bonilla ◽  
Björn Düsenberg ◽  
Franz Lanyi ◽  
Patrik Schmuki ◽  
Dirk W. Schubert ◽  
...  
Keyword(s):  
Nanoparticle Synthesis ◽  
Powder Bed Fusion ◽  
Dry Coating ◽  
Powder Bed ◽  
Polymer Properties
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