Results 71 to 80 of about 129,828 (304)

A greedy algorithm for optimal heating in powder-bed-based additive manufacturing

Journal of Mathematics in Industry, 2021
Powder-bed-based additive manufacturing involves melting of a powder bed using a moving laser or electron beam as a heat source. In this paper, we formulate an optimization scheme that aims to control this type of melting.
Robert Forslund, Anders Snis, Stig Larsson   +2 more
doaj   +1 more source

Design of modified plastic surfaces for antimicrobial applications: Impact of ionizing radiation on the physical and mechanical properties of polypropylene [PDF]

, 2013
Surface modification of polypropylene (PP) sheets was carried out by radiation induced graft polymer- ization of hydrophilic functional molecules such as N,N-dimethylacrylamide (DMA) and [2-methacry- loyloxy)ethyl] trimethylammonium chloride, which is a ...
DELATTRE, Jennifer, GUINAULT, Alain, RIQUET, Anne-Marie, VITRAC, Olivier   +3 more
core   +6 more sources

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Additive manufacturing of novel complex tungsten components via electron beam melting: Basic properties and evaluation of the high heat flux behavior

Nuclear Materials and Energy
The basic principle of electron beam melting (EBM) technology is the additive generation of structures by the selective melting of metal powder layer by layer with an electron beam under vacuum conditions.
Steffen Antusch, Alexander Klein, Siegfried Baumgärtner, Carsten Bonnekoh, Bernd Böswirth, Daniel Dorow-Gerspach, Stefan Dietrich, Marco Ehrhardt, Bradut-Eugen Ghidersa, Henri Greuner, Markus Guttmann, Thomas Hanemann, Judith Jung, Joachim Konrad, Michael Rieth   +14 more
doaj   +1 more source

On the formation of microstructural gradients in a nickel-base superalloy during electron beam melting

Materials & Design, 2018
Electron beam melting (EBM) is one of the most widely used additive manufacturing (AM) methods for metallic components and has demonstrated great potential to fabricate high-end components in the aerospace and energy industries.
Dunyong Deng, Ru Lin Peng, Hans Söderberg, Johan Moverare   +3 more
doaj   +1 more source

On the influence of the electron beam parameters on the shape of the melting in quartz glass [PDF]

, 2017
In this paper, we present the results the dependence of the melting shape in quartz glass on the parameters of an electron beam.
Зенин, А. А., Климов, А. С., Николаенко, А. Н.   +2 more
core  

Direct observation of ultrafast thermal and non-thermal lattice deformation of polycrystalline Aluminum film

, 2017
The dynamics of thermal and non-thermal lattice deformation of nanometer thick polycrystalline aluminum film has been studied by means of femtosecond (fs) time-resolved electron diffraction.
Cao, Jianming, Chen, Jie, Li, Runze, Rentzepis, Peter M., Zhang, Jie, Zhu, Pengfei   +5 more
core   +1 more source

Effect of a Distributed Heat Source on Melt Pool Geometry and Microstructure in Beam-Based Solid Freeform Fabrication [PDF]

, 2006
The ability to control geometric and mechanical properties of parts fabricated using laser-based manufacturing processes requires an understanding and control of melt pool geometry and microstructure.
Bontha, Srikanth, Klingbeil, Nathan W.
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Production of Neutron-Absorbing Zirconium-Boron Alloy by Self-Propagating High-Temperature Synthesis and Its Refining via Electron Beam Melting

Alloys
The paper presents the results of the study of the processes of self-propagating high-temperature synthesis of Zr-1%B alloy and its refining by electron beam melting.
Anatoly Mukhachev, Dmytro Yelatontsev, Olena Kharytonova, Nickolay Grechanyuk   +3 more
doaj   +1 more source