Results 71 to 80 of about 2,939 (187)

Small- to Large-Scale Electron Beam Powder Bed Fusion of Functionally Graded Steels

Journal of Manufacturing and Materials Processing
The ability to control process parameters over time and build space in electron beam powder bed fusion (PBF-EB) opens up unprecedented opportunities to tailor the process and use materials of a different nature in the same build.
Carlos Botero, William Sjöström, Emilio Jimenez-Pique, Andrey Koptyug, Lars-Erik Rännar   +4 more
doaj   +1 more source

HWTS 50 Tool Steel Tailored for Laser Powder Bed Fusion: Sliding Wear of Bare Surfaces and Nitriding Response in Comparison with 18Ni300 and AISI H13

steel research international, EarlyView.
This work investigates the wear resistance and nitriding behavior of PBF‐LB/M‐processed Osprey HWTS 50, a lean hot work tool steel. Three heat treatment conditions are compared to conventional wrought H13, H11, and PBF‐LB/M 18Ni300. The study highlights HWTS 50's enhanced nitrogen diffusion, deeper nitriding hardness depth, and comparable or improved ...
Jonathan Hann, Giorgia Lupi, Sylvain Dossin, Riccardo Casati, Mandanà Moshiri, Arne Röttger, Faraz Deirmina   +6 more
wiley   +1 more source

Spot Melting Strategy for Contour Melting in Electron Beam Powder Bed Fusion

Journal of Manufacturing and Materials Processing
Spot melting is an emerging alternative to traditional line melting in electron beam powder bed fusion, dividing a layer into thousands of individual spots.
Tobias Kupfer, Lukas Spano, Sebastian Pohl, Carolin Körner, Matthias Markl   +4 more
doaj   +1 more source

A new approach of preheating and powder sintering in electron beam powder bed fusion

The International Journal of Advanced Manufacturing Technology
AbstractPreheating is an essential process step in electron beam powder bed fusion. It has the purpose of establishing a sintered powder bed and maintaining an elevated temperature. The sintered powder bed reduces the risk of smoke and in combination with the elevated temperature improves the processability.
Böhm, Jonas, Breuning, Christoph, Markl, Matthias, Körner, Carolin   +3 more
openaire   +2 more sources

Fatigue Strength in Additive Toolmaking: A Study of Metal Binder Jetting and Electron Beam Melting for Processing Carbide‐Rich Cold‐Work Tool Steels

steel research international, EarlyView.
Focusing on the critical tap hole region of the blast furnace, this work examines binder characteristics, prepares tap hole clay with different formulations, and evaluates their physical properties. The findings confirm the advantages of composite binders and offer a new binder option for tap hole clay.
Frederik Tegeder, Lennart Mirko Scholl, Sandra Wieland, Christian Weck, Marie Franke‐Jurisch, Alexander Bezold, Thomas Weißgärber, Christoph Broeckmann   +7 more
wiley   +1 more source

Comprehensive pore defect analysis for electron beam-powder bed fusion of Ti48Al2Cr2Nb

Advances in Industrial and Manufacturing Engineering
The process-microstructure relationship of gamma-titanium aluminide (Ti-48Al-2Cr-2Nb) parts fabricated via electron beam-powder bed fusion (PBF-EB) process was investigated.
Tomisin Ayeni, Paria Karimi, Mohsen K. Keshavarz, Esmaeil Sadeghi, Mahdi Habibnejad-korayem, Mihaela Vlasea   +5 more
doaj   +1 more source

In Situ Alloying of H13 Tool Steel With TiC via PBF‐LB/M

steel research international, EarlyView.
H13 tool steel is in situ alloyed with titanium carbides (TiC) in amounts up to 30 wt.%. This approach offers the advantage that the carbides melt only partially during processing, preventing excessive carbon enrichment of the steel matrix. The resulting microstructure consists of coarse, undissolved and fine, reprecipitated carbides, leading to grain ...
Oliver Bürgi, Anke Kaletsch, Christoph Broeckmann   +2 more
wiley   +1 more source

Crystallographic Texture and Phase Transformation in Titanium Alloys Fabricated via Powder Bed Fusion Processes: A Comprehensive Review

Metals
Additive manufacturing (AM) of titanium alloys enables the production of complex, high-performance components, but the steep thermal gradients and rapid solidification involved make it challenging to control crystallographic texture and phase evolution ...
Rajesh Kannan Arasappan, Hafiz Muhammad Rehan Tariq, Ha-Seong Baek, Minki Kim, Tea-Sung Jun   +4 more
doaj   +1 more source

Microstructure of TiAl Capsules Processed by Electron Beam Powder Bed Fusion Followed by Post-Hot Isostatic Pressing. [PDF]

Materials (Basel), 2023
Bakhshi Farkoush H, Marchese G, Bassini E, Aversa A, Biamino S.   +4 more
europepmc   +1 more source

Tailoring Laser Powder Bed Fusion and Post‐Processing Parameters for JIS SKD61 Tool Steels: Surface Roughness, Microstructure, and Mechanical Properties

steel research international, EarlyView.
Laser powder bed fusion of JIS SKD61 tool steel is systematically optimized using a Taguchi design and ANOVA. Hatch spacing and layer thickness are identified as dominant parameters controlling surface roughness and tensile strength. Subsequent tempering at 600°C improves microstructural stability and mechanical performance, enabling high‐density SKD61
Masrurotin Masrurotin, Andi Ard Maidhah, Maziar Ramezani, Wojciech Macek, Cho‐Pei Jiang   +4 more
wiley   +1 more source