People | Locations | Statistics |
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Ferrari, A. |
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Schimpf, Christian |
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Dunser, M. |
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Thomas, Eric |
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Gecse, Zoltan |
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Tsrunchev, Peter |
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Della Ricca, Giuseppe |
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Cios, Grzegorz |
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Hohlmann, Marcus |
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Dudarev, A. |
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Mascagna, V. |
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Santimaria, Marco |
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Poudyal, Nabin |
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Piozzi, Antonella |
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Mørtsell, Eva Anne |
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Jin, S. |
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Noel, Cédric |
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Fino, Paolo |
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Mailley, Pascal |
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Meyer, Ernst |
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Zhang, Qi |
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Pfattner, Raphael | Brussels |
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Kooi, Bart J. |
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Babuji, Adara |
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Pauporte, Thierry |
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Kirchlechner, C.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2022Strategies for damage tolerance enhancement in metal/ceramic thin films: Lessons learned from Ti/TiNcitations
- 2021On the fracture behavior of Cr 2 AlC coatingscitations
- 2020In situ observations of single grain behavior during plastic deformation in polycrystalline Ni using energy dispersive Laue diffractioncitations
- 2018In-situ observations of the fracture and adhesion of Cu/Nb multilayers on polyimide substratescitations
- 2018Microstructure and mechanical properties in the thin film system Cu-Zrcitations
- 2016Deformation-Induced Martensite: A New Paradigm for Exceptional Steelscitations
- 2013An in-situ high-energy X-ray diffraction study on the hot-deformation behavior of a β-phase containing TiAl alloy
- 2011Deformation mechanisms in micron-sized PST TiAl compression samples: Experiment and modelcitations
- 2008Residual stresses in thermally cycled CrN coatings on steelcitations
Places of action
article
An in-situ high-energy X-ray diffraction study on the hot-deformation behavior of a β-phase containing TiAl alloy
Abstract
In engineering materials, microstructural evolution during hot-working critically determines the properties of the finished part. Intermetallic TiAl alloys are no exception and numerous attempts have been made to improve their performance by subjecting them to harmonized hot-working steps. In the current work a novel in-situ diffraction technique along with conventional microscopic methods were employed to characterize the behavior of the individual phases at two different deformation temperatures. A so-called TNM™ alloy with a nominal composition of Ti-43.5 Al-4 Nb-1 Mo-0.1 B (in at%), which exhibits an adjustable fraction of disordered β-phase at elevated temperatures, was deformed isothermally at 1220 °C and 1300 °C. At 1220 °C three phases (α,β,γ) are present in thermodynamic equilibrium which reduces to two (α,β) at 1300 °C. It was possible to observe in-situ the individual behavior of the involved phases during deformation and the phenomena which accommodate the defects generated by hot-working. Results of post-mortem microscopic investigations were used to confirm the findings. The results of the in-situ experiments give unique insights into the hot-deformation behavior of multi-phase TiAl alloys, which can be used for specific process optimization and for further alloy development.