Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition
This paper investigates the microstructure evolution of Al-TiB2 coatings prepared by cold spraying. In situ Al-TiB2 composite powders containing uniformly distributed titanium diboride (TiB2) particles with a size range of 5 to 100 nm in the Al matrix and Al/Al-TiB2 blended powders were used as the...
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| Format: | Article |
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SAGE
2017
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| Online Access: | https://eprints.nottingham.ac.uk/40323/ |
| _version_ | 1848796029058547712 |
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| author | Chen, H. Pala, Z. Hussain, T. McCartney, D.G. |
| author_facet | Chen, H. Pala, Z. Hussain, T. McCartney, D.G. |
| author_sort | Chen, H. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This paper investigates the microstructure evolution of Al-TiB2 coatings prepared by cold spraying. In situ Al-TiB2 composite powders containing uniformly distributed titanium diboride (TiB2) particles with a size range of 5 to 100 nm in the Al matrix and Al/Al-TiB2 blended powders were used as the cold spray feedstock for coating fabrication on aluminium alloy substrates. The microstructures of the feedstock powders and as-deposited coatings were characterised using scanning electron microscopy with energy dispersive X-ray (EDX) analysis and X-ray diffraction (XRD). Al/Al-TiB2 blended powder coatings, compromising closely packed powder particles, were sprayed to an approximate thickness of 500 μm. Al-TiB2 composite coatings (approximately 50 μm thick) were obtained retaining the microstructure of the composite powders being sprayed and no evidence of detrimental phase transformation was found. However, micro-cracks were found to exist in the Al-TiB2 coating due to the hardly deformable powder particles. Little or no microstrain was revealed in the as-sprayed Al-TiB2 coating, indicating that annealing may have occurred due to the localised adiabatic heating during the spraying process. It is demonstrated that it is possible to fabricate the Al-TiB2 composite coating by cold spray deposition but further improvements to eliminate coating cracking are required. |
| first_indexed | 2025-11-14T19:41:29Z |
| format | Article |
| id | nottingham-40323 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:41:29Z |
| publishDate | 2017 |
| publisher | SAGE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-403232020-05-04T18:29:18Z https://eprints.nottingham.ac.uk/40323/ Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition Chen, H. Pala, Z. Hussain, T. McCartney, D.G. This paper investigates the microstructure evolution of Al-TiB2 coatings prepared by cold spraying. In situ Al-TiB2 composite powders containing uniformly distributed titanium diboride (TiB2) particles with a size range of 5 to 100 nm in the Al matrix and Al/Al-TiB2 blended powders were used as the cold spray feedstock for coating fabrication on aluminium alloy substrates. The microstructures of the feedstock powders and as-deposited coatings were characterised using scanning electron microscopy with energy dispersive X-ray (EDX) analysis and X-ray diffraction (XRD). Al/Al-TiB2 blended powder coatings, compromising closely packed powder particles, were sprayed to an approximate thickness of 500 μm. Al-TiB2 composite coatings (approximately 50 μm thick) were obtained retaining the microstructure of the composite powders being sprayed and no evidence of detrimental phase transformation was found. However, micro-cracks were found to exist in the Al-TiB2 coating due to the hardly deformable powder particles. Little or no microstrain was revealed in the as-sprayed Al-TiB2 coating, indicating that annealing may have occurred due to the localised adiabatic heating during the spraying process. It is demonstrated that it is possible to fabricate the Al-TiB2 composite coating by cold spray deposition but further improvements to eliminate coating cracking are required. SAGE 2017-01-29 Article PeerReviewed Chen, H., Pala, Z., Hussain, T. and McCartney, D.G. (2017) Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications . pp. 1-9. ISSN 2041-3076 Aluminium matrix composite cold spray Al-TiB2 cracking microstrain http://journals.sagepub.com/doi/10.1177/1464420717690559 doi:10.1177/1464420717690559 doi:10.1177/1464420717690559 |
| spellingShingle | Aluminium matrix composite cold spray Al-TiB2 cracking microstrain Chen, H. Pala, Z. Hussain, T. McCartney, D.G. Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition |
| title | Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition |
| title_full | Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition |
| title_fullStr | Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition |
| title_full_unstemmed | Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition |
| title_short | Fabrication and microstrain evolution of Al-TiB2 composite coating by cold spray deposition |
| title_sort | fabrication and microstrain evolution of al-tib2 composite coating by cold spray deposition |
| topic | Aluminium matrix composite cold spray Al-TiB2 cracking microstrain |
| url | https://eprints.nottingham.ac.uk/40323/ https://eprints.nottingham.ac.uk/40323/ https://eprints.nottingham.ac.uk/40323/ |