Sökning: "laser powder bed fusion"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden laser powder bed fusion.

1. 1. The Effects of Morphology and Surface Oxidation of Stainless Steel Powder in Laser Based-Powder Bed Fusion

   Författare :Dmitri Riabov; Chalmers University of Technology; []
   Nyckelord :additive manufacturing; powder surface; 316L stainless steel; oxides; oxidation; laser based-powder bed fusion; morphology; powder properties; powder production;

   Sammanfattning : Laser based-powder bed fusion (LB-PBF) is one of the many techniques within additive manufacturing (AM) that allows for near net shape manufacturing of metallic components. By using powder feedstock, it is possible to spread thin layers of powder and further selectively fuse powder in a repetitive manner until the component is completed. LÄS MER

3. 2. Aspects of building geometry and powder characteristics in powder bed fusion

   Författare :Alexander Leicht; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; direct metal laser sintering; stainless steel; powder recycling; thin wall structures; 316L; microstructure; electron beam melting; powder bed fusion; additive manufacturing;

   Sammanfattning : Additive manufacturing (AM) produces near-net-shaped parts directly from a 3D-CAD model in a layer-by-layer manner. One of the most common AM technique for fabricating metallic components is powder bed fusion (PBF). The PBF process has shown great potential in fabricating metallic parts with properties better or comparable to conventional methods. LÄS MER

4. 3. The process atmosphere as a parameter in the Laser-Powder Bed Fusion process

   Författare :Camille Nicole Géraldine Pauzon; Chalmers University of Technology; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process stability; 316L stainless steel; Ti-6Al-4V; Laser-Powder Bed Fusion; processing atmosphere; process control; powder degradation; Additive Manufacturing;

   Sammanfattning : Laser-Powder Bed Fusion (L-PBF) is an Additive Manufacturing (AM) technique that allows to produce near-net shape components of complex design. Applied to metallic materials, L-PBF allows to consolidate subsequent layers of powder using the heat from laser radiation. LÄS MER

5. 4. Some aspects on designing for metal Powder Bed Fusion

   Författare :Sebastian Hällgren; Lars Pejryd; Jens Ekengren; Robert Pederson; Örebro universitet; []
   Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive Manufacturing; AM; DfAM; lattice; Powder Bed Fusion; Topology optimization; Selective Laser Melting; Electron Beam Melting; Design for manufacturability;

   Sammanfattning : Additive Manufacturing (AM) using the Powder Bed Fusion (PBF) is a relatively new manufacturing method that is capable of creating shapes that was previously practically impossible to manufacture. Many think it will revolutionize how manufacturing will be done in the future. LÄS MER

7. 5. Processability of Laser Powder Bed Fusion of Alloy 247LC : Influence of process parameters on microstructure and defects

   Författare :Olutayo Adegoke; Joel Andersson; Robert Pederson; Högskolan Väst; []
   Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; laser powder bed fusion; Alloy 247LC; additive manufacturing; nickel-based superalloys; processability; cracks; voids.; Production Technology; Produktionsteknik;

   Sammanfattning : This thesis is about laser powder bed fusion (L-PBF) of the nickel-based superalloy: Alloy 247LC. Alloy 247LC is used mainly in gas turbine blades and processing the blades with L-PBF confers performance advantage over the blades manufactured with conventional methods. LÄS MER