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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
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article
Microstructure Evolution of Alloy 625 Foil and Sheet During Creep at 750<super>o</super>C
Abstract
Creep-rupture tests in air of foils and sheets of the nickel-based superalloy 625 at 750oC and 100 MPa have been conducted, and indicate the additional processing required to achieve foil form reduces creep life compared to thicker-section wrought product forms. Both scanning and transmission electron microscopy were employed to examine as-processed and creep-tested specimens to correlate observed microstructures and creep behavior. Prior to creep testing, the morphology consists of gamma phase with M6C precipitates. This morphology changes during creep to one consisting of orthorhombic delta phase extending across gamma grains, and grain boundaries dominated by the presence of rhombohedral mu phase, delta phase, and a diamond-cubic eta phase. Additionally, temperature ranges of equilibrium phase field stability were calculated using JMatPro. The phases predicted and their compositions generally agree with those observed within the superalloy after creep testing.