Measuring residual strain and stress in thermal spray coatings using neutron diffractometers

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dc.contributor.authorFaisal, NHen_AU
dc.contributor.authorAhmed, Ren_AU
dc.contributor.authorPrathuru, AKen_AU
dc.contributor.authorParadowska, AMen_AU
dc.contributor.authorLee, TLen_AU
dc.date.accessioned2021-02-16T01:19:12Zen_AU
dc.date.available2021-02-16T01:19:12Zen_AU
dc.date.issued2020-10-14en_AU
dc.date.statistics2021-02-15en_AU
dc.description.abstractDuring thermal spray coating, residual strain (or stress) is formed within the coating and substrates due to many processes (quenching stress, peening effect, deposition temperature, lamella structure) and micro-structural phase changes. It is also known that the residual stress values of thermally sprayed coatings are dependent upon the measurement method. Neutron diffraction technique can provide a non-destructive through-thickness residual strain analysis in thermally sprayed components with a level of detail not normally achievable by other techniques. Despite this advantage, the number of studies involving neutron diffraction analysis in thermal spray coatings remain limited, partly due to the limited number of neutron diffraction strain measurement facilities globally, and partly due to the difficulty is applying neutron diffraction analysis to measure residual strain in the complex thermal spray coating micro-structure. This paper provides a comprehensive guide to researchers planning to use this technique for thermal spray coatings, and reviews some of these studies. ENGIN-X at the ISIS spallation source in the UK is a neutron diffractometer (time-of-flight) dedicated to materials science and engineering with high resolution and versatile capabilities. The focus is on the procedure of using ENGIN-X diffractometer for thermal spray coatings with a view that it can potentially be translated to other neutron diffractometers. Neutron sources worldwide (e.g. Africa, Asia, Australia, Europe, and North America) have been used to measure strains in various materials, and here, we present few examples where thermal spray coatings have been characterized at various neutron sources worldwide, to study the residual strains and micro-structures. © Elsevier Inc.en_AU
dc.identifier.citationFaisal, N., Ahmed, R., Prathuru, A. K., Paradowska, A., & Lee, T. L. (2020). Measuring residual strain and stress in thermal spray coatings using neutron diffractometers. Acta Materialia, Preprint, 62. http://dx.doi.org/10.2139/ssrn.3711244en_AU
dc.identifier.issn1359-6454en_AU
dc.identifier.issuePreprinten_AU
dc.identifier.journaltitleActa Materialiaen_AU
dc.identifier.pagination62en_AU
dc.identifier.urihttp://dx.doi.org/10.2139/ssrn.3711244en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10415en_AU
dc.language.isoenen_AU
dc.publisherSSRNen_AU
dc.subjectResidual stressesen_AU
dc.subjectStrainsen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectDiffractometersen_AU
dc.subjectSpray coatingen_AU
dc.subjectMicrostructureen_AU
dc.subjectNondestructive testingen_AU
dc.titleMeasuring residual strain and stress in thermal spray coatings using neutron diffractometersen_AU
dc.typeJournal Articleen_AU
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