Staged thermomechanical testing of nickel superalloys produced by selective laser melting
The creep performance of additively manufactured components remains an issue before additive manufacturing can be put fully implemented. In this study, Inconel 718 two-bar specimens are produced by selective laser melting and subjected to a ‘staged’ creep test. Creep test was interrupted at critical...
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| Format: | Article |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/46426/ |
| _version_ | 1848797324277448704 |
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| author | Xu, Zhengkai Hyde, Christopher J. Thompson, Adam Leach, Richard K. Maskery, Ian Tuck, Christopher Clare, Adam T. |
| author_facet | Xu, Zhengkai Hyde, Christopher J. Thompson, Adam Leach, Richard K. Maskery, Ian Tuck, Christopher Clare, Adam T. |
| author_sort | Xu, Zhengkai |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The creep performance of additively manufactured components remains an issue before additive manufacturing can be put fully implemented. In this study, Inconel 718 two-bar specimens are produced by selective laser melting and subjected to a ‘staged’ creep test. Creep test was interrupted at critical junctures and X-ray computed tomography measurements performed at various extensions of the specimen. Periodic X-ray computed tomography measurements allow, for the first time, examination of the specimens during creep testing. Evaluation of specimen performance shows the number and size of pores within the specimen increasing over time as a result of classical creep mechanisms. Location and tracking over time of weak points are performed, allowing early estimation of sample failure points. This information is valuable to selective laser melting practitioners who seek to optimise the build strategy in order to minimise in-built defects. |
| first_indexed | 2025-11-14T20:02:04Z |
| format | Article |
| id | nottingham-46426 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:02:04Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-464262020-05-04T19:16:29Z https://eprints.nottingham.ac.uk/46426/ Staged thermomechanical testing of nickel superalloys produced by selective laser melting Xu, Zhengkai Hyde, Christopher J. Thompson, Adam Leach, Richard K. Maskery, Ian Tuck, Christopher Clare, Adam T. The creep performance of additively manufactured components remains an issue before additive manufacturing can be put fully implemented. In this study, Inconel 718 two-bar specimens are produced by selective laser melting and subjected to a ‘staged’ creep test. Creep test was interrupted at critical junctures and X-ray computed tomography measurements performed at various extensions of the specimen. Periodic X-ray computed tomography measurements allow, for the first time, examination of the specimens during creep testing. Evaluation of specimen performance shows the number and size of pores within the specimen increasing over time as a result of classical creep mechanisms. Location and tracking over time of weak points are performed, allowing early estimation of sample failure points. This information is valuable to selective laser melting practitioners who seek to optimise the build strategy in order to minimise in-built defects. Elsevier 2017-11-05 Article PeerReviewed Xu, Zhengkai, Hyde, Christopher J., Thompson, Adam, Leach, Richard K., Maskery, Ian, Tuck, Christopher and Clare, Adam T. (2017) Staged thermomechanical testing of nickel superalloys produced by selective laser melting. Materials & Design, 133 . pp. 520-527. ISSN 0264-1275 Creep; Two-bar specimen; X-ray computed tomography; Selective laser melting; Mechanical testing; Nickel superalloys http://www.sciencedirect.com/science/article/pii/S0264127517307530 doi:10.1016/j.matdes.2017.08.009 doi:10.1016/j.matdes.2017.08.009 |
| spellingShingle | Creep; Two-bar specimen; X-ray computed tomography; Selective laser melting; Mechanical testing; Nickel superalloys Xu, Zhengkai Hyde, Christopher J. Thompson, Adam Leach, Richard K. Maskery, Ian Tuck, Christopher Clare, Adam T. Staged thermomechanical testing of nickel superalloys produced by selective laser melting |
| title | Staged thermomechanical testing of nickel superalloys produced by selective laser melting |
| title_full | Staged thermomechanical testing of nickel superalloys produced by selective laser melting |
| title_fullStr | Staged thermomechanical testing of nickel superalloys produced by selective laser melting |
| title_full_unstemmed | Staged thermomechanical testing of nickel superalloys produced by selective laser melting |
| title_short | Staged thermomechanical testing of nickel superalloys produced by selective laser melting |
| title_sort | staged thermomechanical testing of nickel superalloys produced by selective laser melting |
| topic | Creep; Two-bar specimen; X-ray computed tomography; Selective laser melting; Mechanical testing; Nickel superalloys |
| url | https://eprints.nottingham.ac.uk/46426/ https://eprints.nottingham.ac.uk/46426/ https://eprints.nottingham.ac.uk/46426/ |