Song, R.; Ponge, D.; Kaspar, R.: Review of the properties and methods for production of ultrafine grained steels. Lecture at the SMEA Conference 2003, Sheffield (2004)
Ponge, D.: Bericht aus der Arbeitsgruppe Weiterentwicklung Umformdilatometer. Lecture at the Sitzung des Werkstoffausschusses (Arbeitskreis Umformdilatometrie), Stahlinstitut VDEh, Düsseldorf, Germany (2004)
Ponge, D.: Warmumformbarkeit von Stahl. Lecture at the Seminar 15/04, Kontaktstudium Werkstofftechnik Stahl, Teil III, Technologische Eigenschaften, Institut für Bildung im Stahl-Zentrum, Stahlinstitut VDEh (2004)
Ponge, D.: Charakterisierung des Umwandlungsverhaltens bei der Simulation moderner Direktwalzprozesse. Lecture at the Sitzung des Werkstoffausschusses (Unterausschuss für Metallographie, Werkstoffanalytik und –simulation), Stahlinstitut VDEh, Düsseldorf (2004)
Ponge, D.: Bericht aus der Arbeitsgruppe Weiterentwicklung Umformdilatometer. Lecture at the Sitzung des Werkstoffausschusses (Arbeitskreis Umformdilatometrie), Stahlinstitut VDEh, Düsseldorf, Germany (2004)
Song, R.; Ponge, D.; Kaspar, R.: Microstructure and mechanical properties of ultrafine grained steels. Lecture at the workshop KUL-UGent-RWTH-MPIE, Gent University (2004)
Ponge, D.; Song, R.; Kaspar, R.: The effect of Mn on the microstructure and mechanical properties after heavy warm rolling of C-Mn steel. Lecture at the 2004 TMS annual meeting in Charlotte, North Carolina, USA (2004)
Ponge, D.: Arbeiten des MPI für Eisenforschung auf dem Gebiet der feinkörnigen Stähle. Lecture at the Sitzung des Arbeitsausschusses des Werkstoffausschusses, Stahlinstitut VDEh, Düsseldorf, Germany (2004)
Ponge, D.: Hochfeste Baustähle und deren schweißtechnische Verarbeitung. Berufsfortbildung Deutscher Verband für Schweißen und verwandte Verfahren e. V., Hamburg (2003)
Storojeva, L.; Kaspar, R.; Ponge, D.: Ferritic-Pearlitic Steel with Deformation Induced Spheroidized Cementite. Lecture at the International Conference on Processing & Manufacturing of Advanced Materials THERMEC'2003, Leganes, Madrid, Spain (2003)
Kwiatkowski da Silva, A.; Ponge, D.; Inden, G.; Gault, B.; Raabe, D.: Physical Metallurgy of segregation, austenite reversion, carbide precipitation and related phenomena in medium Mn steels. Gordon Research Conference: Physical Metallurgy, Biddeford, ME, USA (2017)
Neddermann, P.; Ponge, D.; Raabe, D.: Influence of Chromium on the Low Temperature Austenite Reversion through Local Equilibrium in Martensitic Stainless Steel. MSE 2014, Darmstadt, Germany (2014)
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…
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.
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.
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…