Krüger, T.; Varnik, F.; Raabe, D.: Simulation of a dense suspension of deformable particles using the lattice Boltzmann method. ICMMES 2009, Guangzhou, China (2009)
Varnik, F.: Lattice Boltzmann studies of confined flows at intermediate Reynolds numbers: The role of wall roughness. The 5th International Conference for Mesoscopic Methods in Engineering, Amsterdam, The Netherlands (2008)
Varnik, F.: Stability and kinetics of droplets: A free energy based lattice Boltzmann study. DPG Spring Meeting of the Condensed Matter Division, Berlin, Germany (2008)
Gross, M.; Varnik, F.; Raabe, D.: Stability and kinetic of droplets: A free energy based lattice Boltzmann study. Sommer Workshop on Nano-& Microfluidics, Bad Honnef, Germany (2008)
Varnik, F.: Yield stress discontinuity: A manifest of the glass transition in a sheared glass. 369th Heraeus-Seminar, Interplay of Thermodynamics and Hydrodynamics in Soft Condensed Matter, Bad-Honnef, Germany (2006)
Varnik, F.: Shearing glassy model systems: A test of theoretical predictions on non linear rheology. 6th Liquid Matter Conference, Utrecht, The Nederlands (2005)
Varnik, F.: Confinement effects on the slow dynamics of a simulated supercooled polymer melt. International workshop on dynamics in viscous liquids, München, Germany (2004)
Varnik, F.: Glass Transition in Polymer Films: A Molecular Dynamics Study. International Conference on Computational Physics (CCP), Aachen, Germany (2001)
Varnik, F.: Propriétés statiques et dynamiques des couches minces de polymères. Les Journées de Rencontre Nationale sur les propriétés des verres, Montpellier, France (2001)
We have studied a nanocrystalline AlCrCuFeNiZn high-entropy alloy synthesized by ball milling followed by hot compaction at 600°C for 15 min at 650 MPa. X-ray diffraction reveals that the mechanically alloyed powder consists of a solid-solution body-centered cubic (bcc) matrix containing 12 vol.% face-centered cubic (fcc) phase. After hot compaction, it consists of 60 vol.% bcc and 40 vol.% fcc. Composition analysis by atom probe tomography shows that the material is not a homogeneous fcc–bcc solid solution
Magnetic properties of magnetocaloric materials is of utmost importance for their functional applications. In this project, we study the magnetic properties of different materials with the final goal to discover new magnetocaloric materials more suited for practical applications.
In this project, we work on the use of a combinatorial experimental approach to design advanced multicomponent multi-functional alloys with rapid alloy prototyping. We use rapid alloy prototyping to investigate five multicomponent Invar alloys with 5 at.% addition of Al, Cr, Cu, Mn and Si to a super Invar alloy (Fe63Ni32Co5; at.%), respectively…
The aim of the current study is to investigate electrochemical corrosion mechanisms by examining the metal-liquid nanointerfaces. To achieve this, corrosive fluids will be strategically trapped within metal structures using novel additive micro fabrication techniques. Subsequently, the nanointerfaces will be analyzed using cryo-atom probe…
In this project we pursue recent developments in the field of austenitic steels with up to 18% reduced mass density. The alloys are based on the Fe-Mn-Al-C system.
Local lattice distortion is one of the core effects in complex concentrated alloys (CCAs). It has been expected that the strength CCAs can be improved by inducing larger local lattice distortions. In collaboration with experimentalists, we demonstrated that VCoNi has larger local lattice distortions and indeed has much better strength than the…
Laser Powder Bed Fusion (LPBF) is the most commonly used Additive Manufacturing processes. One of its biggest advantages it offers is to exploit its inherent specific process characteristics, namely the decoupling the solidification rate from the parts´volume, for novel materials with superior physical and mechanical properties. One prominet…
The aim of the Additive micromanufacturing (AMMicro) project is to fabricate advanced multimaterial/multiphase MEMS devices with superior impact-resistance and self-damage sensing mechanisms.