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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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Lindemann, Janny
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2021Designing advanced intermetallic titanium aluminide alloys for additive manufacturingcitations
- 2021Microstructure and mechanical properties of novel TiAl alloys tailored via phase and precipitate morphologycitations
- 2020Novel intermetallic-reinforced near-α Ti alloys manufactured by spark plasma sinteringcitations
- 2020An Advanced TiAl Alloy for High-Performance Racing Applicationscitations
- 2019Microstructural Evolution and Mechanical Properties of an Advanced γ-TiAl Based Alloy Processed by Spark Plasma Sinteringcitations
- 2015Characterization of the high temperature deformatin behavior of two intermetallic TiAl-Mo alloyscitations
- 2014Microstructural design and mechanical properties of a cast and heat-treated intermetallic multi-phase γ-TiAl based alloycitations
- 2014Hot-working behavior of an advanced intermetallic multi-phase $gamma$-TiAl based alloycitations
- 2012Effect of Nitride Coatings on the Wear and Fatigue Behavior of Titanium Alloy Ti-6Al-4V
- 2012Surface Effects on the Mechanical Properties of Gamma Titanium Aluminidescitations
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article
An Advanced TiAl Alloy for High-Performance Racing Applications
Abstract
<p>Requirements and strict regulations for high-performance racing applications involve the use of new and innovative lightweight structural materials. Therefore, intermetallic γ-TiAl-based alloys enable new opportunities in the field due to their lower density compared to commonly used Ni-base superalloys. In this study, a β-solidifying TiAl alloy was examined toward its use as structural material for inlet and outlet valves. The nominal composition of the investigated TNM alloy is Ti–43.5Al–4Nb–1Mo–0.1B (in at%), which enables an excellent formability at elevated temperatures due to the presence of bcc β-phase. Different hot-extrusion tests on an industrial scale were conducted on the cast and hot isostatic pressed material to determine the ideal microstructure for the respective racing application. To simulate these operation conditions, hot tensile tests, as well as rotational bending tests, at room temperature were conducted. With a higher degree of deformation, an increasing strength and fatigue limit was obtained, as well as a significant increment of ductility. The fracture surfaces of the rotational bending test specimens were analyzed using scanning electron microscopy, revealing the relationship between crack initiation and microstructural constituents. The results of this study show that the mechanical performance of extruded TiAl material can be tailored via optimizing the degree of hot-extrusion.</p>