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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
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article
The creep behavior of a fully lamellar γ-TiAl based alloy
Abstract
Intermetallic γ-TiAl based alloys are in focus of interest because of their excellent mechanical properties at high temperatures in combination with their low density. Currently, they are used as turbine blades in aero engines at service temperatures up to around 1023 K. Therefore, the detailed knowledge of the creep behavior is of major interest. In this study, the influence of differently spaced fully lamellar microstructures on the creep behavior of an advanced micro-alloyed γ-TiAl based alloy, a so-called TNM+ alloy, is investigated. Creep tests at 1073 K using stresses of 150 and 200 MPa are conducted applying a constant load. In order to describe the creep behavior, a so-called one-parameter model, which uses the mean lamellar interface spacing as governing parameter, is adopted. The different lamellar spacings of the specimens are analyzed by means of transmission electron microscopy. Finally, based on a new constitutive law creep curves are calculated and compared with experimentally determined creep curves. The results are discussed in the light of existing literature.