Rao, J.; Payton, E. J.; Somsen, C.; Neuking, K.; Eggeler, G.; Kostka, A.; dos Santos, J. F.: Where Does the Lithium Go? – A Study of the Precipitates in the Stir Zone of a Friction Stir Weld in a Li-containing 2xxx series Al Alloy. Advanced Engineering Materials 12 (4), pp. 298 - 303 (2010)
Barbatti, C.; Garcia, J.; Pinto, H.; Kostka, A.; Di Prinzio, A.; Staia, M.; Pitonak, R.; Pyzalla, A. R.: Influence of micro-blasting on the microstructure and residual stresses of CVD κ-Al2O3 coatings. Surface and Coatings Technology 203 (24), pp. 3708 - 3717 (2009)
Coelho, R. S.; Kostka, A.; Pinto, H.; Rothkirch, A.; Pyzalla, A. R.; Dos Santos, J.: Microstructure and Residual Stress Formation in an AA6040 to AZ31B Friction Stir Weld. Advances in X-Ray Analyses 52, pp. 360 - 367 (2009)
Kostka, A.; Coelho, R. S.; dos Santos, J.; Pyzalla, A. R.: Microstructure of friction stir welding of aluminium alloy to magnesium alloy. Scripta Materialia 60, pp. 953 - 956 (2009)
Coelho, R. S.; Kostka, A.; dos Santos, J.; Pyzalla, A. R.: ESBD technique visualization of material flow in aluminium to steel friction-stir dissimilar welding. Advanced Engineering Materials 10 (12), pp. 1127 - 1133 (2008)
Barbatti, C.; Garcia, J.; Sket, F.; Kostka, A.; Pyzalla, A. R.: Influence of nitridation on surface microstructure and properties of graded cemented carbides with Co and Ni binders. Surface and Coating Technology 292, pp. 5962 - 5975 (2008)
Coelho, R. S.; Kostka, A.; Pinto, H.; Riekehr, S.; Kocak, M.; Pyzalla, A. R.: Microstructure and Mechanical Properties of Magnesium Alloy AZ31B Laser Beam Welds. Material Science and Engineering A 485, pp. 20 - 30 (2008)
Coelho, R. S.; Kostka, A.; Pinto, H.; Riekehr, S.; Kocak, M.; Pyzalla, A. R.: Microstructure and Residual Stresses in Dissimilar Mg–Al–Zn-alloy Single Overlap Laser Beam Welds. Materials Science Forum 571-572, pp. 361 - 366 (2008)
Coelho, R. S.; Kostka, A.; Sheikhi, S.; dos Santos, J.; Pyzalla, A. R.: Microstructure and Mechanical Properties of an AA6181-T4 Aluminium Alloy to HC340LA High Strength Friction Stir Overlap Weld. Advanced Engineering Materials 10 (10), pp. 961 - 972 (2008)
Kostka, A.; Tak, K.-G.; Eggeler, G.: On the effect of equal-channel angular pressing on creep of tempered martensite ferritic steels. Materials Science and Engineering A 481-482, pp. 723 - 726 (2008)
Dumont, M.; Pyzalla, A. R.; Kostka, A.; Borbély, A.: Characterization of sauropod bone structure. In: Biology of the sauropod dinosaurs: understanding the life of giants, pp. 150 - 169 (Eds. Klein, N.; Remes, K.; Sander, P.M.). Indiana University Press, Bloomington and Indianapolis (2011)
dos Santos, J. F.; Olea, C. A. W.; Coelho, R. S.; Kostka, A.; Paglia, C. S.: Metallurgy and weld performance in friction stir welding. In: Friction stir welding: From basics to applications, pp. 1 - 436 (Eds. Lohwasser, D.; Chen, Z.). Woodhead Publishing Limited incorporating Chandos Publishing, Cambridge, UK (2009)
Hammerschmidt, T.; Koßmann, J.; Zenk, C. H.; Neumeier, S.; Göken, M.; Lopez-Galilea, I.; Mújica Roncery, L.; Huth, S.; Kostka, A.; Theisen, W.et al.; Drautz, R.: The role of local chemical composition for TCP phase precipitation in Ni-base and Co-base superalloys. In: Proceedings of the International Symposium on Superalloys, Vol. 2016, pp. 89 - 96. 13th International Symposium on Superalloys, SUPERALLOYS 2016; Seven Springs Mountain ResortSeven Springs, Seven Springs, PA, USA, September 11, 2016 - September 15, 2016. Minerals, Metals and Materials Society, Pittsburgh, PA, USA (2016)
Springer, H.; Aparicio-Fernández, R.; Duarte, M. J.; Zhang, H.; Baron, C.; Kostka, A.; Raabe, D.: Alloy design and processing routes for novel high modulus steels. In: PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, p. 981 (Eds. Chen, L.-Q.; Militzer, M.; Botton, G.; Howe, J.; Sinclair, C. W. et al.). International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015, Whistler, BC, Canada, June 28, 2015 - July 03, 2015. PTM 2015, Whistler, British Columbia (2015)
Naraparaju, R.; Christ, H.-J.; Renner, F. U.; Kostka, A.: Dislocation Engineering and its effect on the oxidation behaviour. Materials at High Temperatures 29, pp. 116 - 122 (2012)
Ponge, D.; Millán, J.; Dmitrieva, O.; Sander, B.; Kostka, A.; Raabe, D.: Ultra high strength steel design by using nanoparticles. In: Proceedings Book 2nd Inter. Symp. Steel Science ISSS 2009 (Ed. K, H. N.T.). Proceedings 2nd Inter. Symp. Steel Science ISSS 2009, Kyoto, Japan, October 21, 2009 - October 24, 2009. The Iron and Steel Institute of Japan, Japan (2009)
Garcia, J.; Lammer, A.; Garcia, L. F.; Weber, S.; Kostka, A.; Pyzalla, A. R.: Investigations of Wear Mechanisms in Diamond Tools with Fe-Based Matrices Reinforced with WC-Co Particles. Int. Symposium on Friction, Wear and Wear Protection, Aachen, Germany, April 09, 2008 - April 11, 2008. (2008)
Scientists of the Max-Planck-Institut für Eisenforschung pioneer new machine learning model for corrosion-resistant alloy design. Their results are now published in the journal Science Advances
The utilization of Kelvin Probe (KP) techniques for spatially resolved high sensitivity measurement of hydrogen has been a major break-through for our work on hydrogen in materials. A relatively straight forward approach was hydrogen mapping for supporting research on hydrogen embrittlement that was successfully applied on different materials, and…
This project will aim at developing MEMS based nanoforce sensors with capacitive sensing capabilities. The nanoforce sensors will be further incorporated with in situ SEM and TEM small scale testing systems, for allowing simultaneous visualization of the deformation process during mechanical tests
Photovoltaic materials have seen rapid development in the past decades, propelling the global transition towards a sustainable and CO2-free economy. Storing the day-time energy for night-time usage has become a major challenge to integrate sizeable solar farms into the electrical grid. Developing technologies to convert solar energy directly into…
It is very challenging to simulate electron-transfer reactions under potential control within high-level electronic structure theory, e. g. to study electrochemical and electrocatalytic reaction mechanisms. We develop a novel method to sample the canonical NVTΦ or NpTΦ ensemble at constant electrode potential in ab initio molecular dynamics…
The field of micromechanics has seen a large progress in the past two decades, enabled by the development of instrumented nanoindentation. Consequently, diverse methodologies have been tested to extract fundamental properties of materials related to their plastic and elastic behaviour and fracture toughness. Established experimental protocols are…
Statistical significance in materials science is a challenge that has been trying to overcome by miniaturization. However, this process is still limited to 4-5 tests per parameter variance, i.e. Size, orientation, grain size, composition, etc. as the process of fabricating pillars and testing has to be done one by one. With this project, we aim to…
Crystal Plasticity (CP) modeling [1] is a powerful and well established computational materials science tool to investigate mechanical structure–property relations in crystalline materials. It has been successfully applied to study diverse micromechanical phenomena ranging from strain hardening in single crystals to texture evolution in…