Dissimilar weld failure: A forensic analysis to determine primary failure mechanisms

Yanting Yin; Raihan Rumman; Madjid Sarvghad; Stuart Bell; Geoffrey Will; Richard E. Clegg; Egon Perilli; Sophie Rapagna; David A. Lewis; Theodore A. Steinberg; Gunther G. Andersson

doi:10.1016/j.engfailanal.2022.106453

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Dissimilar weld failure: A forensic analysis to determine primary failure mechanisms

Journal article

Peer reviewed

Dissimilar weld failure: A forensic analysis to determine primary failure mechanisms

Yanting Yin, Raihan Rumman, Madjid Sarvghad, Stuart Bell, Geoffrey Will, Richard E. Clegg, Egon Perilli, Sophie Rapagna, David A. Lewis, Theodore A. Steinberg, …

Engineering Failure Analysis, Vol.139, pp.1-11

2022

DOI: https://doi.org/10.1016/j.engfailanal.2022.106453

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Abstract

failure

dissimilar material

weld

concentrated solar receiver

microstructure

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 CO2 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.

Details

Title: Dissimilar weld failure: A forensic analysis to determine primary failure mechanisms
Authors: Yanting Yin (Author) - Flinders University
Raihan Rumman (Author) - Flinders University
Madjid Sarvghad (Author) - Queensland University of Technology
Stuart Bell (Author) - Queensland University of Technology
Geoffrey Will (Author) - Queensland University of Technology
Richard E. Clegg (Author) - Queensland University of Technology
Egon Perilli (Author) - Flinders University
Sophie Rapagna (Author) - Flinders University
David A. Lewis (Author) - Flinders University
Theodore A. Steinberg (Author) - Queensland University of Technology
Gunther G. Andersson (Corresponding Author) - Flinders University
Publication details: Engineering Failure Analysis, Vol.139, pp.1-11
Publisher: Elsevier Ltd.
DOI: 10.1016/j.engfailanal.2022.106453
ISSN: 1873-1961
Grant note: ARC LE180100136 Perilli; ARC LE130100038 LIEF / Australian Research Council
Organisation Unit: School of Science, Technology and Engineering
Language: English
Record Identifier: 99737875302621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Engineering, Mechanical; Materials Science, Characterization & Testing

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