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13 Results Found

  • Article
  • Open Access
8 Citations
3,085 Views
16 Pages

30 May 2024

Among various metal additive manufacturing (AM) technologies, L-PBF is known for fabricating intricate components. However, due to step edges and powder particle attachments, attaining a good surface finish is challenging, especially on downskin surf...

  • Article
  • Open Access
18 Citations
4,776 Views
15 Pages

Influence of Pulsed Exposure Strategies on Overhang Structures in Powder Bed Fusion of Ti6Al4V Using Laser Beam

  • Jonas Grünewald,
  • Pirmin Clarkson,
  • Ryan Salveson,
  • Georg Fey and
  • Katrin Wudy

15 July 2021

Manufacturing structures with low overhang angles without support structures is a major challenge in powder bed fusion of metals using laser beam (PBF-LB/M). In the present work, various test specimens and parameter sets with continuous wave (cw) and...

  • Article
  • Open Access
5 Citations
2,014 Views
14 Pages

11 October 2024

The topological characteristics of the down-skin surfaces for as-built components by laser powder bed fusion (LPBF) are particularly representative, while the study on the improvement of the surface quality of these surfaces remains largely unexplore...

  • Article
  • Open Access
377 Views
26 Pages

Role of Build Orientation and Surfaces on Passive Film Kinetics and Degradation of LB-DED Ti6Al4V in Fluoride Media

  • Lorenzo D’Ambrosi,
  • Katya Brunelli,
  • Saeed Khademzadeh,
  • Christophe Lyphout and
  • Arshad Yazdanpanah

5 December 2025

Although Directed Energy Deposition (DED) of Ti–6Al–4V has been widely explored for its mechanical performance, the combined influence of build orientation and surface position (upskin/downskin) on passive film kinetics and fluoride-induc...

  • Article
  • Open Access
11 Citations
2,839 Views
16 Pages

18 May 2023

Laser powder–bed fusion (L-PBF) metal additive manufacturing has been widely utilized in various industries. However, large variability and inconsistent quality of the built parts still hinder the full potential of this manufacturing technology...

  • Article
  • Open Access
1,097 Views
18 Pages

5 December 2024

The simulation of additive manufacturing has become a prominent research area in the past decade. Process physics simulations are employed to replicate laser powder bed fusion (L-PBF) manufacturing processes, aiming to predict potential issues throug...

  • Article
  • Open Access
20 Citations
4,991 Views
14 Pages

Stability of a Melt Pool during 3D-Printing of an Unsupported Steel Component and Its Influence on Roughness

  • Mateusz Skalon,
  • Benjamin Meier,
  • Andreas Gruberbauer,
  • Sergio de Traglia Amancio-Filho and
  • Christof Sommitsch

10 February 2020

The following work presents the results of an investigation of the cause–effect relationship between the stability of a melt pool and the roughness of an inclined, unsupported steel surface that was 3D-printed using the laser powder bed fusion...

  • Article
  • Open Access
9 Citations
3,754 Views
23 Pages

Additive Manufacturing of Side-Coupled Cavity Linac Structures from Pure Copper: A First Concept

  • Michael Mayerhofer,
  • Stefan Brenner,
  • Ricardo Helm,
  • Samira Gruber,
  • Elena Lopez,
  • Lukas Stepien,
  • Gerald Gold and
  • Günther Dollinger

Compared to conventional manufacturing, additive manufacturing (AM) of radio frequency (RF) cavities has the potential to reduce manufacturing costs and complexity and to enable higher performance. This work evaluates whether normal conducting side-c...

  • Article
  • Open Access
31 Citations
4,675 Views
10 Pages

27 September 2019

The manufacture of highly complex components from nickel-based superalloys with laser powder bed fusion (L-PBF) technology can reduce the production costs parts with comparable microstructural and mechanical properties when compared to casting. The p...

  • Article
  • Open Access
8 Citations
2,862 Views
11 Pages

Improving Fabrication and Performance of Additively Manufactured RF Cavities by Employing Co-Printed Support Structures and Their Subsequent Removal

  • Michael Mayerhofer,
  • Stefan Brenner,
  • Michael Doppler,
  • Luis Catarino,
  • Stefanie Girst,
  • Vesna Nedeljkovic-Groha and
  • Günther Dollinger

The enormous potential of additive manufacturing (AM), particularly laser powder bed fusion (L-PBF), to produce radiofrequency cavities (cavities) has already been demonstrated. However, the required geometrical accuracy for GHz TM010 cavities is cur...

  • Article
  • Open Access
59 Citations
6,972 Views
29 Pages

Modeling and Optimization Approaches of Laser-Based Powder-Bed Fusion Process for Ti-6Al-4V Alloy

  • Behzad Fotovvati,
  • Madhusudhanan Balasubramanian and
  • Ebrahim Asadi

18 November 2020

Laser-based powder-bed fusion (L-PBF) is a widely used additive manufacturing technology that contains several variables (processing parameters), which makes it challenging to correlate them with the desired properties (responses) when optimizing the...

  • Article
  • Open Access
788 Views
17 Pages

9 September 2025

Laser Powder Bed Fusion (L-PBF) parts combine geometric freedom with process-induced rough surfaces that challenge residual-stress metrology. We evaluated the accuracy of the incremental hole-drilling (IHD) method with electronic speckle pattern inte...

  • Article
  • Open Access
16 Citations
4,976 Views
17 Pages

Influences of Surface, Heat Treatment, and Print Orientation on the Anisotropy of the Mechanical Properties and the Impact Strength of Ti 6Al 4V Processed by Laser Powder Bed Fusion

  • Benjamin Meier,
  • Norica Godja,
  • Fernando Warchomicka,
  • Carlos Belei,
  • Sandra Schäfer,
  • Andreas Schindel,
  • Gregor Palcynski,
  • Reinhard Kaindl,
  • Wolfgang Waldhauser and
  • Christof Sommitsch

The scope of this work is to provide an overview of the influences of process parameters, print orientation, and post-process treatments of Ti6AlV4 processed by laser powder bed fusion on its microstructure and physical and mechanical properties and...