Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloy
Continuum models and miniaturised experiments are used to elucidate the high-temperature forgeability of the Ni-based superalloy Inconel 903. Uniaxial compression high temperature tests allow the derivation of an apparent activation energy and the strain rate sensitivity of the deformation process,...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-12-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127518307500 |
| _version_ | 1818826687408766976 |
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| author | E. Alabort R.C. Reed D. Barba |
| author_facet | E. Alabort R.C. Reed D. Barba |
| author_sort | E. Alabort |
| collection | DOAJ |
| description | Continuum models and miniaturised experiments are used to elucidate the high-temperature forgeability of the Ni-based superalloy Inconel 903. Uniaxial compression high temperature tests allow the derivation of an apparent activation energy and the strain rate sensitivity of the deformation process, and to propose a unified constitutive model that captures the underlying physics of deformation. Metallographic analysis is then used to elucidate changes in microstructure which arise during the deformation process; microstructure evolution models which define the changes in grain size and recrystallisation during high temperature compression are proposed. Miniaturised forging experiments in double-cone specimens validate the modelling approach under relevant forging conditions at different temperatures and deformation rates. Finally, the deformation behaviour of this material in an industrially relevant manufacturing scenario – the forging process of a turbine disc – is studied numerically. Keywords: Superalloys, Forging, Process modelling, Continuum plasticity, Turbine discs |
| first_indexed | 2024-12-19T00:31:37Z |
| format | Article |
| id | doaj.art-9c0bc0ac0dc94db588064a2c11b00f59 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-19T00:31:37Z |
| publishDate | 2018-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-9c0bc0ac0dc94db588064a2c11b00f592022-12-21T20:45:04ZengElsevierMaterials & Design0264-12752018-12-01160683697Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloyE. Alabort0R.C. Reed1D. Barba2Oxmet Technologies Ltd., 34 Centre for Innovation and Enterprise, Begbroke Science Park, OX5 1PF, United Kingdom; Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United KingdomDepartment of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, United Kingdom; Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United KingdomDepartment of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, United Kingdom; Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United Kingdom; Corresponding author.Continuum models and miniaturised experiments are used to elucidate the high-temperature forgeability of the Ni-based superalloy Inconel 903. Uniaxial compression high temperature tests allow the derivation of an apparent activation energy and the strain rate sensitivity of the deformation process, and to propose a unified constitutive model that captures the underlying physics of deformation. Metallographic analysis is then used to elucidate changes in microstructure which arise during the deformation process; microstructure evolution models which define the changes in grain size and recrystallisation during high temperature compression are proposed. Miniaturised forging experiments in double-cone specimens validate the modelling approach under relevant forging conditions at different temperatures and deformation rates. Finally, the deformation behaviour of this material in an industrially relevant manufacturing scenario – the forging process of a turbine disc – is studied numerically. Keywords: Superalloys, Forging, Process modelling, Continuum plasticity, Turbine discshttp://www.sciencedirect.com/science/article/pii/S0264127518307500 |
| spellingShingle | E. Alabort R.C. Reed D. Barba Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloy Materials & Design |
| title | Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloy |
| title_full | Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloy |
| title_fullStr | Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloy |
| title_full_unstemmed | Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloy |
| title_short | Combined modelling and miniaturised characterisation of high-temperature forging in a nickel-based superalloy |
| title_sort | combined modelling and miniaturised characterisation of high temperature forging in a nickel based superalloy |
| url | http://www.sciencedirect.com/science/article/pii/S0264127518307500 |
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