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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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Maziasz, Philip J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2010Structure and composition of nanometer-sized nitrides in a creep resistant cast austenitic alloycitations
- 2009Developing New Cast Austenitic Stainless Steels with Improved High-Temperature Creep Resistance
- 2008Microstructure Evolution of Alloy 625 Foil and Sheet During Creep at 750<super>o</super>Ccitations
- 2007Creep Strength and Microstructure of Al20-25+Nb Alloy Sheets and Foils for Advanced Microturbine Recurperators
- 2007Developing New Cast Austenitic Stainless Steels with Improved High-Temperature Creep Resistance
- 2007Candidate alloys for cost-effective, high-efficiency, high-temperature compact/foil heat-exchangers
- 2007Creep Behavior of a New Cast Austenitic Alloycitations
- 2007Alumina-forming Austenitic Alloys for Advanced Recuperators
- 2006Advanced Alloys for Compact, High-Efficiency, High-Temperature Heat-Exchangers
- 2006CF8C-Plus: A New High Temperature Austenitic Casting for Advanced Power Systemscitations
- 2005Overview of Creep Strength and Oxidation of Heat-Resistant Alloy Sheets and Foils for Compact Heat-Exchangers
Places of action
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document
Alumina-forming Austenitic Alloys for Advanced Recuperators
Abstract
Materials selection for thin-walled recuperators has been extensively investigated over the past decade. In the latest generation of recuperated turbine engines, type 347 stainless steel has been replaced by higher alloyed steels and Ni-base chromia-forming alloys. However, high (linear) rates of chromia evaporation in exhaust gas fundamentally limits the oxidation lifetime of these chromia-forming alloys. One solution is to use alumina-forming alloys that are more resistant to this environment. The lower scale growth kinetics and resistance to evaporation in the presence of water vapor suggests an order of magnitude increase in lifetime for alumina-forming alloys. A significant problem with this strategy was the large drop in creep strength with the addition of sufficient Al to form an external alumina scale. However, new Fe-base austenitic compositions have been developed with sufficient strength for this application above 700 C.