| People | Locations | Statistics |
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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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Akisanya, Alfred R.
University of Aberdeen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2023An investigation on the effect of widespread internal corrosion defects on the collapse pressure of subsea pipelinescitations
- 2023Burst pressure of thin-walled pipes with arbitrarily orientated isolated surface corrosion defectcitations
- 2020Solution Volume Effect
- 2019Sand Failure
- 2019Effect of ammonium bisulphite and chloride on the pitting and stress corrosion cracking resistance of super duplex stainless steel pipes under combined internal pressure and axial tensioncitations
- 2018Failure analysis of a failed anchor chain linkcitations
- 2017Fracture initiation in bi-material joints subject to combined tension and shear loadingcitations
- 2016Indentation failure of circular composite sandwich platescitations
- 2015Autoclave design for high pressure-high temperature corrosion studiescitations
- 2014Analysis of bolted flanged panel joint for GRP sectional tankscitations
- 2014Burst pressure of super duplex stainless steel pipes subject to combined axial tension, internal pressure and elevated temperaturecitations
- 2013The Mechanical Behavior of a 25Cr Super Duplex Stainless Steel at Elevated Temperaturecitations
- 2012Effect of ageing on phase evolution and mechanical properties of a high tungsten super-duplex stainless steelcitations
- 2005Fracture initiation at the interface corner of bimaterial solids
- 2000Bag design in isostatic pressingcitations
- 2000Finite element modelling of cold isostatic pressing
- 2000Edge effects in the failure of elastic/viscoelastic joints subjected to surface tractions
Places of action
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article
Effect of ageing on phase evolution and mechanical properties of a high tungsten super-duplex stainless steel
Abstract
The effect of ageing temperature and holding time on the precipitation of secondary phases and the mechanical properties of a 25Cr-6.7Ni-0.32N-3.0Mo-2.5 W super duplex stainless steel is examined. The ageing temperature was varied from 600 to 900 °C and the holding time was varied from 1 to 240 minutes. Two types of Cr and Mo enriched intermetallic phases, sigma (s) and chi (¿), were found to precipitate preferentially at the ferrite/austenite interface and within the ferrite grain. The precipitation of the ¿-phase occurred preferentially before the s-phase. The concentration of these secondary phases, which was quantified by a combination of microscopy and image analysis, increases with increasing ageing temperature and holding time, leading to significant reduction in the uniform strain and enhancement of the modulus, hardness and yield and tensile strengths. The measured concentration of the precipitated sigma phase is in agreement with the prediction by the Johnson-Mehl-Avrami kinetic model.