Rashkova, B.; Faller, M.; Pippan, R.; Dehm, G.: Growth mechanism of Al2Cu precipitates during in situ TEM heating of a HPT deformed Al–3wt.%Cu alloy. Journal of Alloys and Compounds 600, pp. 43 - 50 (2014)
Imrich, P. J.; Kirchlechner, C.; Motz, C.; Dehm, G.: Differences in deformation behavior of bicrystalline Cu micropillars containing a twin boundary or a large-angle grain boundary. Acta Materialia 73, pp. 240 - 250 (2014)
Harzer, T. P.; Daniel, R.; Mitterer, C.; Dehm, G.; Zhang, Z. L.: Transmission electron microscopy characterization of CrN films on MgO(001). Thin Solid Films 545, pp. 154 - 160 (2013)
Daum, B.; Dehm, G.; Clemens, H.; Rester, M.; Fischer, F. D.; Rammerstorfer, F. G.: Elastoplastic buckling as source of misinterpretation of micropillar tests. Acta Materialia 61 (13), pp. 4996 - 5007 (2013)
Taylor, A. A.; Cordill, M. J.; Bowles, L.; Schalko, J.; Dehm, G.: An elevated temperature study of a Ti adhesion layer on polyimide. Thin Solid Films 531, pp. 354 - 361 (2013)
Li, L. L.; An, X. H.; Imrich, P. J.; Zhang, P.; Zhang, Z. J.; Dehm, G.; Zhang, Z. F.: Microcompression and cyclic deformation behaviors of coaxial copper bicrystals with a single twin boundary. Scripta Materialia 69, pp. 199 - 202 (2013)
Zhang, Z.; Li, H.; Daniel, R.; Mitterer, C.; Dehm, G.: Insights into the atomic and electronic structure triggered by ordered nitrogen vacancies in CrN. Physical Review B 87 (1), pp. 014104-1 - 014104-9 (2013)
Li, J.; Zarif, M. Z.; Dehm, G.; Schumacher, P.: Influence of impurity elements on the nucleation and growth of Si in high purity melt-spun Al–Si-based alloys. Philosophical Magazine 92 (31), pp. 3789 - 3805 (2012)
Cordill, M. J.; Taylor, A. A.; Berger, J.; Schmidegg, K.; Dehm, G.: Robust mechanical performance of chromium-coated polyethylene terephthalate over a broad range of conditions. Philosophical Magazine 92 (25-27), pp. 3346 - 3362 (2012)
Taylor, A. A.; Cordill, M. J.; Dehm, G.: On the limits of the interfacial yield model for fragmentation testing of brittle films on polymer substrates. Philosophical Magazine 92 (25-27), pp. 3363 - 3380 (2012)
Yang, B.; Motz, C.; Rester, M.; Dehm, G.: Yield stress influenced by the ratio of wire diameter to grain size – a competition between the effects of specimen microstructure and dimension in micro-sized polycrystalline copper wires. Philosophical Magazine Letters; Nano-mechanical testing in materials research and development III 92 (25-27), pp. 3243 - 3256 (2012)
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…
This study investigates the mechanical properties of liquid-encapsulated metallic microstructures created using a localized electrodeposition method. By encapsulating liquid within the complex metal microstructures, we explore how the liquid influences compressive and vibrational characteristics, particularly under varying temperatures and strain…
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.
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.