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Powder Reuse Cycles in Electron Beam Powder Bed Fusion—Variation of Powder Characteristics [PDF]

Materials, 2021
A path to lowering the economic barrier associated with the high cost of metal additively manufactured components is to reduce the waste via powder reuse (powder cycled back into the process) and recycling (powder chemically, physically, or thermally processed to recover the original properties) strategies.
Gitanjali Shanbhag, Mihaela Vlasea
exaly   +6 more sources

Actual state-of-the-art of electron beam powder bed fusion

European Journal of Materials, 2022
As a relatively young additive manufacturing technology, Electron Beam Powder Bed Fusion (EB-PBF) attracts increasing attention in academics and industry.
Zongwen Fu, Carolin Körner
doaj   +3 more sources

Extracting powder bed features via electron optical images during electron beam powder bed fusion

Additive Manufacturing Letters
Electron beam powder bed fusion offers the unique opportunity to observe the process by measuring scattered electrons on a metal detector. This technique is the state of the art in generating electron optical images of the build area after melting using ...
Matthias Markl, Mohammad Reza Azadi Tinat, Timo Berger, Jakob Renner, Carolin Körner   +4 more
doaj   +4 more sources

Electron Beam Powder Bed Fusion of Water Atomized Iron and Powder Blends. [PDF]

Materials (Basel), 2022
In the present state of the art, highly spherical alloy powders are employed as feedstock in powder bed fusion processes. These powders are characterized by high flowability and apparent density. Their elaborate fabrication process is reflected in high powder price, adding a significant fraction to the cost of additively manufactured parts.
Kirchner A, Klöden B, Franke-Jurisch M, Walther G, Weißgärber T.   +4 more
europepmc   +3 more sources

Electron-Optical In Situ Imaging for the Assessment of Accuracy in Electron Beam Powder Bed Fusion. [PDF]

Materials (Basel), 2021
The current study evaluates the capabilities of electron-optical (ELO) in situ imaging with respect to monitoring and prediction of manufacturing precision in electron beam powder bed fusion. Post-process X-ray computed tomography of two different as-built parts is used to quantitatively evaluate the accuracy and limitations of ELO imaging ...
Arnold C, Breuning C, Körner C.
europepmc   +4 more sources

Powder recycling for electron beam powder bed fusion of TiAl alloy

Materials & Design
This study systematically investigates the impact of powder recycling (up to 70 cycles) on Ti-48Al-2Cr-2Nb (at.%) alloy processed by electron beam powder bed fusion (EB-PBF).
Feihong Wang, Mengchen Song, Yongfeng Liang, Gengwu Ge, Xiaoyu Liang, Feng Lin, Honghui Wu, Dongfang Wang, Wenbin Kan, Li Liu, Junpin Lin   +10 more
doaj   +2 more sources

Microstructure and Hardness of Ti-6242 Alloy Fabricated by Electron Beam Powder Bed Fusion and Laser Powder Bed Fusion Methods [PDF]

Journal of Advanced Materials in Engineering
Introduction and Objectives: Ti-6Al-2Sn-4Zr-2Mo (Ti6242) alloy is a near-alpha titanium alloy widely used in biomedical, automobile, and aviation industries, known for having a high service temperature.
Amir Hossein Emami Ghalehghasemi, Abolfazl Azadi, Behzad Niroumand, Manuela Galati, Abdollah Saboori   +4 more
doaj   +2 more sources

A Ray Tracing Model for Electron Optical Imaging in Electron Beam Powder Bed Fusion

Journal of Manufacturing and Materials Processing, 2023
The recent success of the process monitoring method Electron Optical Imaging, applied in the additive manufacturing process Electron Beam Powder Bed Fusion, necessitates a clear understanding of the underlying image formation process.
Jakob Renner, Julian Grund, Matthias Markl, Carolin Körner   +3 more
doaj   +3 more sources

Comparison of Phase Characteristics and Residual Stresses in Ti-6Al-4V Alloy Manufactured by Laser Powder Bed Fusion (L-PBF) and Electron Beam Powder Bed Fusion (EB-PBF) Techniques

Crystals, 2021
Ti-6Al-4V alloy fabricated by laser powder bed fusion (L-PBF) and electron beam powder bed fusion (EB-PBF) techniques have been studied for applications ranging from medicine to aviation. The fabrication technique is often selected based on the part size
Aya Takase, Takuya Ishimoto, Naotaka Morita, Naoko Ikeo, Takayoshi Nakano   +4 more
doaj   +3 more sources

Tensile and Creep Properties Improvement of Ti-6Al-4V Alloy Specimens Produced by Electron Beam Powder Bed Fusion Additive Manufacturing

Metals, 2019
Thanks to their excellent mechanical strength in combination with low density, high melting point, and good resistance to corrosion, titanium alloys are very useful in many industrial and biomedical fields. The new additive manufacturing methods, such as
Placido Aliprandi, Fabio Giudice, Eugenio Guglielmino, Andrea Sili   +3 more
doaj   +3 more sources