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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ali, M. A. |
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| Azevedo, Nuno Monteiro |
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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
Creep-rupture performance of 0.07C-23Cr-45Ni-6W-Ti,Nb austenitic alloy (HR6W) tubes
Abstract
A series of base metal and cross-weld creep-rupture tests were conducted on the advanced austenitic alloy, HR6W, to evaluate the material for use at advanced ultrasupercritical (A-USC) steam conditions. Creep deformation and rupture were evaluated by traditional methods and data were compared with other studies to evaluate the creep response of the material. Optical and scanning electron microscopy revealed changes in failure mode and precipitation behavior. Thermodynamic predictions of phase stability were conducted and the results were compared with the experimental data. This research confirmed the important role of W and the precipitation of laves phase in the alloy system, but a direct relationship between laves phase content and creep strength was not observed. Furthermore, Cr content was investigated as an additional factor which may be important in the microstructural stability of the alloy which had not been previously considered. Finally, when compared to commercially available stainless steels, this heat of HR6W showed no creep strength advantage for A-USC application.