A5019432293- Additive Manufacturing Materials and Processes
- Aluminum Alloys Composites Properties
- Additive Manufacturing and 3D Printing Technologies
- Metallic Glasses and Amorphous Alloys
- Fluid Dynamics and Heat Transfer
- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Metal Alloys Wear and Properties
- Quasicrystal Structures and Properties
- Aluminum Alloy Microstructure Properties
- Advanced materials and composites
- Microstructure and mechanical properties
- Advanced ceramic materials synthesis
- Electrohydrodynamics and Fluid Dynamics
- Particle Dynamics in Fluid Flows
- Powder Metallurgy Techniques and Materials
- Glass properties and applications
- Solidification and crystal growth phenomena
- Aerosol Filtration and Electrostatic Precipitation
- Plant Surface Properties and Treatments
- Welding Techniques and Residual Stresses
- Material Dynamics and Properties
- Materials Engineering and Processing
- Material Properties and Applications
- Metal Forming Simulation Techniques
Leibniz-Institut für Werkstofforientierte Technologien - IWT
2015-2024
University of Bremen
2013-2023
Staats- und Universitätsbibliothek Bremen
2021
Innovative Wireless Technologies (United States)
2015
Materials Science & Engineering
2014
Deutsche Post (Germany)
2008
Beiersdorf (Germany)
2008
System Simulation (United Kingdom)
2008
Nitrogen is used as an alloying element, substituting the expensive and allergenic element nickel, in austenitic stainless steels to improve their mechanical properties corrosion resistance. The development of steel powders with increased nitrogen content for laser additive manufacturing has recently received great interest. To increase (for example AISI 316L), two measures are taken this study: (1) melting under a atmosphere, (2) adding manganese solubility steel. melt then atomized by...
Laser powder bed fusion (PBF-LB/M) of bulk metallic glasses (BMGs) has experienced growing scientific and industrial interest in the last years, with a special focus on application relevant systems based zirconium. The high cooling rates layer-wise build-up process allow overcoming size geometry limitations typical for conventional casting routes. Yet, novel production approach requires different alloy characteristics than processes. present work reports first time PBF-LB/M-processing three...
Structural material development for lightweight applications aims at improving the key parameters strength, stiffness and ductility low density, but these properties are typically mutually exclusive. Here we present how overcome this trade-off with a new class of nano-structured steel - TiB2 composites synthesised in-situ via bulk metallurgical spray-forming. Owing to nano-sized dispersion particles extreme density obtained by formation rapid solidification kinetics has mechanical...
Additive manufacturing processes such as selective laser melting and electron beam require small particle sizes. A widely used technique to produce suitable powders is close-coupled atomisation. To further decrease the achieved sizes, annular geometry of gas nozzle changed a convergent–divergent (CD) profile. This novel configuration capable operating stably at low pressures 0.8 MPa above. Beyond that, unwanted effects lick-back are avoided. Different nozzles with conventional have been...
Laser powder bed fusion (PBF-LB/M) of bulk metallic glasses permits large and complex components to solidify an amorphous state, thus expanding the processing possibilities this material class. Here, Cu-Ti-Zr-Ni family, also known as Vitreloy 101, is systematically investigated for PBF-LB/M itself. Gas atomization was used produce Vit101 derivates micro-alloyed with Si Sn. The influence alloy composition on glass formation, oxygen content, particle morphology, flowability were investigated....
Laser additively manufactured duplex stainless steels contain mostly ferrite in the as-built parts due to rapid solidification of printed layers. To achieve microstructures (ferrite and austenite roughly equal proportions) and, thus, a good combination mechanical properties corrosion resistance, an austenitic steel powder (X2CrNiMo17-12-2) super (X2CrNiMoN25-7-4) were mixed different proportions mixtures processed via PBF-LB/M (Laser Powder Bed Fusion) under various processing conditions by...
Metal powders in laser-powder-bed-fusion (L-PBF) often exhibit cohesive flow resulting from interparticle adhesion. Nanoparticle dry-coating can improve powder flowability and promote layer densification. A Co25Cr25Fe25Ni25 metal (20–90 µm) is dry-coated with TiN particles a diameter of 16 nm at low concentrations up to 69 ppm. The dynamic angle repose decreased bulk density increased compared the uncoated state 49 ° 4.67 g/cm3 29 4.81 TiN, respectively. UV/Vis spectroscopy showed negligible...