Zaafarani, N.; Raabe, D.; Singh, R. N.; Roters, F.; Zaefferer, S.: Three dimensional investigation of the texture and microstructure below a nanoindent in a Cu single crystal using 3D EBSD and crystal plasticity finite element simulations. Acta Materialia 54 (7), pp. 1707 - 1994 (2006)
Ardehali Barani, A.; Ponge, D.; Raabe, D.: Strong and Ductile Martensitic Steels for Automotive Applications. Steel Research International 77, 9-10, pp. 704 - 711 (2006)
Bastos, A.; Zaefferer, S.; Raabe, D.; Schuh, C.: Characterization of the Microstructure and Texture of Nanostructured Electrodeposited NiCo by use of Electron Backscatter Diffraction (EBSD). Acta Materialia 54, pp. 2451 - 2462 (2006)
Ma, A.; Roters, F.; Raabe, D.: A dislocation density based constitutive model for crystal plasticity FEM including geometrically necessary dislocations. Acta Materialia 54, pp. 2169 - 2179 (2006)
Ma, A.; Roters, F.; Raabe, D.: Studying the effect of grain boundaries in dislocation density based crystal plasticity finite element simulations. International Journal of Solids and Structures 43, pp. 7287 - 7303 (2006)
Nikolov, S.; Han, C. S.; Raabe, D.: On the origin of size effects in small-strain elasticity of solid polymers. International Journal of Solids and Structures 44, pp. 1582 - 1592 (2006)
Raabe, D.; Romano, P.; Sachs, C.; Fabritius, H.; Al-Sawalmih, A.; Yi, S. B.; Servos, G.; Hartwig, H. G.: Microstructure and crystallographic texture of the chitin-protein network in the biological composite material of the exoskeleton of the lobster Homarus americanus. Materials Science and Engineering A 421, pp. 143 - 153 (2006)
Sachs, C.; Fabritius, H.; Raabe, D.: Experimental investigation of the elastic-plastic deformation of mineralized lobster cuticle by digital image correlation. Journal of Structural Biology 155, pp. 409 - 425 (2006)
Sandim, H. R. Z.; Hayama, A. O. F.; Raabe, D.: Recrystallization of the ODS superalloy PM-1000. Materials Science and Engineering A 430, pp. 172 - 178 (2006)
Sandim, M. J. R.; Stamopoulos, D.; Sandim, H. R. Z.; Ghivelder, L.; Thilly, L.; Vidal, V.; Lecouturier, F.; Raabe, D.: Size effects on the magnetic properties of Cu-Nb nanofilamentary wires processed by severe plastic deformation. Superconducting Science and Technology 19, pp. 1233 - 1239 (2006)
Song, R.; Ponge, D.; Raabe, D.; Speer, J. G.; Matlock, D. K.: Overview of processing, microstructure and mechanical properties of ultrafine grained bcc steels. Materials Science and Engineering A 441, pp. 1 - 17 (2006)
Tikhovskiy, I.; Raabe, D.; Roters, F.: Simulation of the deformation texture of a 17%Cr ferritic stainless steel using the texture component crystal plasticity FE method considering texture gradients. Scripta Materialia 54, pp. 1537 - 1542 (2006)
Varnik, F.; Raabe, D.: Scaling effects in microscale fluid flows at rough solid surfaces. Modeling and Simulation in Materials Science and Engineering 14, pp. 857 - 873 (2006)
Liu, W. C.; Man, C.-S.; Raabe, D.; Morris, J. G.: Effect of hot and cold deformation on the recrystallization texture of continuous cast AA 5052 aluminum alloy. Scripta Materialia 53 (11), pp. 1273 - 1277 (2005)
Song, R.; Ponge, D.; Raabe, D.: Influence of Mn Content on the Microstructure and Mechanical Properties of Ultrafine Grained C–Mn Steels. ISIJ International 45/11, pp. 1721 - 1726 (2005)
Sandim, H. R. Z.; Raabe, D.: EBSD study of grain subdivision of a Goss grain in coarse-grained cold-rolled niobium. Scripta Materialia 53 (2), pp. 207 - 212 (2005)
Song, R.; Ponge, D.; Raabe, D.: Improvement of the work hardening rate of ultrafine grained steels through second phase particles. Scripta Materialia 52/11, pp. 1075 - 1080 (2005)
Song, R.; Ponge, D.; Raabe, D.; Kaspar, R.: Microstructure and crystallographic texture of an ultrafine grained C–Mn steel and their evolution during warm deformation and annealing. Acta Materialia 53 (3), pp. 845 - 858 (2005)
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…
This project is a joint project of the De Magnete group and the Atom Probe Tomography group, and was initiated by MPIE’s participation in the CRC TR 270 HOMMAGE. We also benefit from additional collaborations with the “Machine-learning based data extraction from APT” project and the Defect Chemistry and Spectroscopy group.
Statistical significance in materials science is a challenge that has been trying to overcome by miniaturization as in micropillar compression. 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.…