Results 61 to 70 of about 3,761 (227)

Multimodal γ′ precipitation in Inconel-738 Ni-based superalloy during electron-beam powder bed fusion additive manufacturing [PDF]

, 2020
: Additive manufacturing is a promising alternative method for fabricating components of Ni-based superalloys which are difficult to cast, form and join.
Ringer, SP, Whitelock, E, Haghdadi, N ; https://orcid.org/, Lim, B, Liao, X, Babu, SS, Chen, H, Primig, S ; https://orcid.org/   +7 more
core   +1 more source

Build orientation effect on Ti6Al4V thin-wall topography by electron beam powder bed fusion [PDF]

, 2022
Additive Manufacturing is a key enabling technology for Industry 4.0 and the Green Deal, allowing more efficient resources exploitation while providing innovative design to critical components.
Iuliano L., Atzeni E., MacUlotti G., Salmi A., Marchiandi G., Piscopo G.   +5 more
core   +1 more source

Microstructure and hardness comparison of as-built inconel 625 alloy following various additive manufacturing processes

Results in Materials, 2021
Experimental examples of as-built microstructures and associated microindentation hardnesses (HV) for a wide range of metal additive manufacturing (AM) processes for Inconel 625 alloy are presented in this research paper.
Ariel Gamon, Edel Arrieta, Paul R. Gradl, Colton Katsarelis, Lawrence E. Murr, Ryan B. Wicker, Francisco Medina   +6 more
doaj   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Electron Beam-Melting and Laser Powder Bed Fusion of Ti6Al4V: Transferability of Process Parameters

Metals, 2022
Metal powder bed-based Additive Manufacturing (AM) technologies, such as Electron Beam-Melting (EBM) and Laser Powder Bed Fusion (LPBF), are established in several industries due to the large design freedom and mechanical properties. While EBM and LPBF have similar operating steps, process-specific characteristics influence the component design.
Megahed, Sandra, Aniko, Vadim, Schleifenbaum, Johannes Henrich   +2 more
openaire   +3 more sources

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

Precipitation Simulations of the O‐Phase in Ti2AlNb Alloys Processed by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Simulated and experimental evolution of the O‐phase volume fraction during postprocessing of a Ti‐21Al‐25Nb (at.%) alloy processed by laser powder bed fusion. With results of sensitivity to input parameters from a thorough and quantified analysis, the interfacial energy matrix/precipitate is the most relevant input parameter for the simulation of the O‐
Silvana Tumminello, Joachim Gussone, Suzana G. Fries, Marcus Rackel, Andreas Stark, Norbert Schell, Jan Haubrich, Guillermo Requena   +7 more
wiley   +1 more source

Assessing the effect of scan strategies on the structure-property relationship in electron beam powder bed fusion processed 316L stainless steel

Materials & Design
Different electron beam path patterns realized in eight varying scanning strategies were adopted in an electron beam powder bed fusion machine to understand the effect of scan patterns on the microstructure and mechanical properties of 316L austenitic ...
Prithwish Tarafder, Jinghao Xu, Anton Wiberg, Johan Moverare   +3 more
doaj   +1 more source

High-Throughput Numerical Investigation of Process Parameter-Melt Pool Relationships in Electron Beam Powder Bed Fusion

Modelling, 2023
The reliable and repeatable fabrication of complex geometries with predetermined homogeneous properties is still a major challenge in electron beam powder bed fusion (PBF-EB).
Christoph Breuning, Jonas Böhm, Matthias Markl, Carolin Körner   +3 more
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source