Kostka, A.; Tak, K.-G.; Eggeler, G.: On the effect of equal-channel angular pressing on creep of tempered martensite ferritic steels. Euromat 2007, Nürnberg (2007)
Coelho, R. S.; Kostka, A.; Riekehr, S.; Kocak, M.; Pyzalla, A. R.: Microstructure and Properties of AZ31B Magnesium Alloy Laser Beam Welds. Euromat 2007, Nürnberg, Germany (2007)
Coelho, R.; Kostka, A.; Pinto, H.; Kocak, M.; Pyzalla, A. R.: Mikrostruktur, Textur und Eigenspannungen in Schweißverbindungen aus AZ 31. FA 13 Eigenspannungen der AWT, Forschungsgemeinschaft Werkzeuge und Werkstoffe e.V., Remscheid (2007)
Coelho, R. S.; Kostka, A.; Riekehr, S.; Zettler, R.; Sheikhi, S.; Dos Santos, J.; Pyzalla, A. R.: Joining of light-weight materials by laser beam welding and friction stir welding. 2nd Alban Conference, Grenoble, France (2007)
Wang, M.; Tasan, C. C.; Ponge, D.; Kostka, A.; Raabe, D.: Size effects on mechanical stability of metastable austenite. GDRi CNRS MECANO General Meeting on the Mechanics of Nano-Objects, MPIE, Düsseldorf, Germany (2013)
Dumont, M.; Kostka, A.; Sander, M.; Borbély, A.; Pyzalla, A. R.: Comparison of apatite crystallite sizes in sauropod and mammal fossil bones. 6th Bone diagenesis meeting, Poppelsdorfer Schloss, University of Bonn, Bonn, Deutschland (2009)
Kostka, A.; Song, J.; Raabe, D.; Veehmayer, M.: Microstructure and properties of interfaces formed by explosion cladding of Ti-Steel. XXI Conference on Applied Crystallography, Zakopane, Poland (2009)
Springer, H.; Kostka, A.: Verbinden von hochfestem Stahl mit einer Aluminiumlegierung durch Rührreibschweißen. 4. GKSS Workshop, Geesthacht, Germany (2009)
Coelho, R. S.; Kostka, A.; Pinto, H.; dos Santos, J.; Pyzalla, A. R.: Microstructure and residual stresses of high-strength steel to aluminium alloy friction stir welds. ICRS-8, Denver, USA (2008)
Coelho, R. S.; Kostka, A.; dos Santos, J.; Pyzalla, A. R.: Friction stir welding of aluminum alloy to steel. Part I: Mechanical properties. VI-PNAM Symposium, Berlin, Germany (2008)
Coelho, R. S.; Kostka, A.; dos Santos, J.; Pyzalla, A. R.: Friction stir welding of aluminum alloy to steel. Part II: Microstructure. VI-PNAM Symposium, Berlin, Germany (2008)
Coelho, R. S.; Kostka, A.; dos Santos, J.; Pyzalla, A. R.: Friction stir welding of aluminum alloy to steel. Part III: Material flow. VI-PNAM Symposium, Berlin, Germany (2008)
Coelho, R. S.; Kostka, A.; Zettler, R.; dos Santos, J.; Pyzalla, A. R.: On the microstructure and residual stresses in friction-stir dissimilar AA6040 aluminium alloy to AZ31 magnesium alloy weld. MECASENS IV, Wien (2007)
Kostka, A.; Coelho, R.; dos Santos, J.; Pyzalla, A. R.: Microstructure and Mechanical Properties of Aluminium - Steel Friction Stir Welds. Small Scale Plasticity Workshop, Braunwald, Switzerland (2007)
Kostka, A.; Coelho, R.; Zettler, R.; dos Santos, J.; Pyzalla, A. R.: Microstructure and Residual Stresses in an AA6040-T4/AZ31B Friction-Stir Weld. Euromat 2007, Nürnberg, Germany (2007)
International researcher team presents a novel microstructure design strategy for lean medium-manganese steels with optimized properties in the journal Science
In this project, we aim to design novel NiCoCr-based medium entropy alloys (MEAs) and further enhance their mechanical properties by tuning the multiscale heterogeneous composite structures. This is being achieved by alloying of varying elements in the NiCoCr matrix and appropriate thermal-mechanical processing.
“Smaller is stronger” is well known in micromechanics, but the properties far from the quasi-static regime and the nominal temperatures remain unexplored. This research will bridge this gap on how materials behave under the extreme conditions of strain rate and temperature, to enhance fundamental understanding of their deformation mechanisms. The…
The precipitation of intermetallic phases from a supersaturated Co(Nb) solid solution is studied in a cooperation with the Hokkaido University of Science, Sapporo.
This project (B06) is part of the SFB 1394 collaborative research centre (CRC), focused on structural and atomic complexity, defect phases and how they are related to material properties. The project started in January 2020 and has three important work packages: (i) fracture analysis of intermetallic phases, (ii) the relationship of fracture to…