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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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Rumman, Raihan
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Topics
Publications (6/6 displayed)
- 2023Corrosion of iron-nickel-chromium alloys in high temperature carbonate salt under argon atmospherecitations
- 2022On the compatibility of liquid sodium as heat transfer fluid for advanced concentrated solar thermal energy systemscitations
- 2022Dissimilar Weld Failure: A Forensic Analysis to Determine Primary Failure Mechanismscitations
- 2021Chemical degradation in Thermally Cycled Stainless Steel 316 with High-Temperature Phase Change Materialcitations
- 2019Understanding the potential of microwave sintering on WC - Cocitations
- 2019Mechanical Properties and Microstructural Behaviour of Microwave Sintered WC–Cocitations
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article
Dissimilar Weld Failure: A Forensic Analysis to Determine Primary Failure Mechanisms
Abstract
<p>Solar receivers are an integral part of a concentrated solar power plant and commonly utilise tubular structures to absorb solar energy and transfer the heat into a heat transfer fluid. These systems often contain dissimilar materials joined through welds which are exposed to cyclic temperatures, which can be a locus of failure. A systematic forensic analysis was carried out on a low-pressure CO<sub>2</sub> receiver that had developed extensive cracking. Microstructural characterisation using micro-computed tomography was performed to understand the failure mechanism in an area adjacent to a welded section of the two dissimilar alloys Haynes 230 and 253 MA. An electrolytical oxalic acid etch showed grain boundary damage from oxidation. Grain boundary damage through oxidation was confirmed with SEM and energy dispersive X-ray spectroscopy (EDX) analysis as the likely metallurgical degradation mechanism which, combined with thermally induced stress cycles led to the failure of the weaker stainless-steel tube adjacent to the weld.</p>