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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Fischer, Franz Dieter
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2022Strain and interface energy of ellipsoidal inclusions subjected to volumetric eigenstrains: shape factorscitations
- 2021An atomistic view on Oxygen, antisites and vacancies in the γ-TiAl phasecitations
- 2020Cycled hydrogen permeation through Armco iron – A joint experimental and modeling approachcitations
- 2020Damage tolerance of lamellar bonecitations
- 2019The creep behavior of a fully lamellar γ-TiAl based alloycitations
- 2019Unifcation of the non-linear geometric transformation theory of martensite and crystal plasticity - Application to dislocated lath martensite in steelscitations
- 2018The effect of residual stresses and strain reversal on the fracture toughness of TiAl alloyscitations
- 2016Experimental and theoretical evidence of displacive martensite in an intermetallic Mo-containing $gamma$-TiAl based alloycitations
- 2011Bioinspired Design Criteria for Damage-Resistant Materials with Periodically Varying Microstructurecitations
- 2010A kinetic model of the transformation of a micropatterned amorphous precursor into a porous single crystalcitations
- 2005Martensitic phase transformations of bulk nanocrystalline NiTi alloys
- 2003Effect of back stress evolution due to martensitic transformation on iso-volume fraction lines in a Cr-Ni-Mo-Al-Ti maraging steelcitations
- 2002Back stress evolution and iso-volume fraction lines in a Cr-Ni-Mo-Al-Ti maraging steel in the process of martensitic transformationcitations
- 2002Theory, experiments and numerical modelling of phase transformations with emphasis on TRIP
- 2001Upsetting of cylinders: A comparison of two different damage indicatorscitations
- 2001Mechanical properties of a Cr-Ni-Mo-Al-Ti maraging steel in the process of martensitic transformationcitations
- 2000New view on transformation induced plasticity (TRIP)citations
- 2000The role of backstress in phase transforming steels
- 2000Deformation behavior of elastic-plastic materials containing instantly transforming inclusions
Places of action
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article
Unifcation of the non-linear geometric transformation theory of martensite and crystal plasticity - Application to dislocated lath martensite in steels
Abstract
<p>This work generalizes the geometric non-linear, phenomenological theory of martensite crystallography, a time-proven model for the description of martensitic microstructures. Particularly, the case of reconstructive lattice transformation associated with slip is treated as opposed to displacive twinning. The problem of the slip model is that the parameter and solution space of the theory is huge since the combination of active slip systems and their accumulated shears are free parameters. Furthermore, the framework of crystal plasticity alone, e.g. slip selection by the highest resolved shear stress may not be suitable for this task, since the problem of reconstructive transformation is fundamentally different from single crystal plasticity. To address these issues three generalizations are proposed: The concept of crystal plasticity is combined with the geometric theory of martensite crystallography into a novel framework for i) the selection of active slip systems, ii) an exact treatment of lattice rotations due to large plastic deformations coupled to the transformation resulting in dislocated lath martensites, iii) an object-oriented approach meeting the multiple constraints on crystallographic relations (e.g. misorientations) and deformation parameters. The drawback of a vast, non-representative set of possible solutions is overcome by using well-established, crystallographic microstructural information as inequality constraints. The framework is applied to f.c.c. → b.c.c. lattice constants of a high-resistance maraging steel. Due to the multiplicity of the solutions the focus is not laid on specific solutions, but rather on the implications the new framework has in comparison with the prevalent theory. However, to obtain specific solutions, a free and open-source Matlab program with a user-friendly GUI has been developed. Finally, the fields of applications for optimized crystallographic sets are discussed.</p>