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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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Evans, Neal D.
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
- 2010Creep-rupture performance of 0.07C-23Cr-45Ni-6W-Ti,Nb austenitic alloy (HR6W) tubes
- 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
- 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
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article
Structure and composition of nanometer-sized nitrides in a creep resistant cast austenitic alloy
Abstract
The microstructure of a new and improved high-temperature creep-resistant cast austenitic alloy, CF8C-Plus, was characterized after creep-rupture testing at 1023 K (750 C) and 100 MPa. Microstructures were investigated by detailed scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy (EDS). Principal component analysis of EDS spectrum images was used to examine the complex precipitate morphology. Thermodynamic modeling was performed to predict equilibrium phases in this alloy as well as the compositions of these phases at relevant temperatures. The improved high-temperature creep strength of CF8C-Plus over its predecessor CF8C is suggested to be due to the modified microstructure and phase stability in the alloy, including the absence of {delta}-ferrite in the as-cast condition and the development of a stable, slow-growing precipitation hardening nitride phase - the tetragonal Z-phase - which has not been observed before in cast austenitic stainless steels.