Grain boundary properties of a nickel-based superalloy: characterisation and modelling
Miniaturised tensile tests coupled with in-situ scanning electron microscopy are used to deduce the grain boundary properties of a nickel-based superalloy at 750 °C. This allows the damage initiation, evolution and failure processes to be observed directly. The significant variation in ductility – c...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2018
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| _version_ | 1826312093340532736 |
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| author | Alabort, E Barba, D Sulzer, S Lißner, M Petrinic, N Reed, RC |
| author_facet | Alabort, E Barba, D Sulzer, S Lißner, M Petrinic, N Reed, RC |
| author_sort | Alabort, E |
| collection | OXFORD |
| description | Miniaturised tensile tests coupled with in-situ scanning electron microscopy are used to deduce the grain boundary properties of a nickel-based superalloy at 750 °C. This allows the damage initiation, evolution and failure processes to be observed directly. The significant variation in ductility – consistent with the limited number of grain boundaries being present – is rationalised using a crystal plasticity approach calibrated by experiments on single crystals loaded along the <001>, <011>, and <111> directions. Quantitative strength and toughness values for the grain boundaries are estimated using a cohesive zone method. The modelling approach is used to determine an approximation of the size of the representative volume element (RVE) needed for volume-averaged behaviour. |
| first_indexed | 2024-03-07T08:20:57Z |
| format | Journal article |
| id | oxford-uuid:f0a3fa6a-b81e-48e9-8630-614e2eb3379f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:20:57Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:f0a3fa6a-b81e-48e9-8630-614e2eb3379f2024-01-26T14:17:25ZGrain boundary properties of a nickel-based superalloy: characterisation and modellingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:f0a3fa6a-b81e-48e9-8630-614e2eb3379fEnglishSymplectic Elements at OxfordElsevier2018Alabort, EBarba, DSulzer, SLißner, MPetrinic, NReed, RCMiniaturised tensile tests coupled with in-situ scanning electron microscopy are used to deduce the grain boundary properties of a nickel-based superalloy at 750 °C. This allows the damage initiation, evolution and failure processes to be observed directly. The significant variation in ductility – consistent with the limited number of grain boundaries being present – is rationalised using a crystal plasticity approach calibrated by experiments on single crystals loaded along the <001>, <011>, and <111> directions. Quantitative strength and toughness values for the grain boundaries are estimated using a cohesive zone method. The modelling approach is used to determine an approximation of the size of the representative volume element (RVE) needed for volume-averaged behaviour. |
| spellingShingle | Alabort, E Barba, D Sulzer, S Lißner, M Petrinic, N Reed, RC Grain boundary properties of a nickel-based superalloy: characterisation and modelling |
| title | Grain boundary properties of a nickel-based superalloy: characterisation and modelling |
| title_full | Grain boundary properties of a nickel-based superalloy: characterisation and modelling |
| title_fullStr | Grain boundary properties of a nickel-based superalloy: characterisation and modelling |
| title_full_unstemmed | Grain boundary properties of a nickel-based superalloy: characterisation and modelling |
| title_short | Grain boundary properties of a nickel-based superalloy: characterisation and modelling |
| title_sort | grain boundary properties of a nickel based superalloy characterisation and modelling |
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