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DC Field | Value | Language |
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dc.contributor.author | Vella, Kelsey Ann | - |
dc.contributor.author | Buhagiar, Joseph | - |
dc.contributor.author | Cassar, Glenn | - |
dc.contributor.author | Attard, Bonnie | - |
dc.contributor.author | Chen, Jian | - |
dc.contributor.author | Zammit, Ann | - |
dc.date.accessioned | 2024-04-24T09:11:44Z | - |
dc.date.available | 2024-04-24T09:11:44Z | - |
dc.date.issued | 2024 | - |
dc.identifier.citation | Vella, K. A., Buhagiar, J., Cassar, G., Attard, B., Chen, J., & Zammit, A. (2024). Microstructural analysis of additively manufactured Ti–6Al–4V subjected to duplex surface treatment. Materials Chemistry and Physics, 319, 129303. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/121227 | - |
dc.description.abstract | In this research, the impact of an innovative duplex surface treatment on the surface characteristics of additively manufactured Ti–6Al–4V was investigated. This duplex approach encompasses two distinct stages; the material is initially subjected to mechanical shot peening, followed by the application of a ceramic multilayer coating (consisting of Ti, TiN, TiAlN and TiAlCuN) through physical vapor deposition. The comprehensive analysis delves into the influence of the shot peening procedure, employing advanced techniques such as X-ray diffraction stress measurements, profile hardness assessments, and electron backscatter diffraction. The mechanical shot peening treatment induced a hardened surface layer, approximately 150 μm thick. This transformation was accompanied by the generation of compressive residual stresses, detected up to depths of 150 μm from the surface. Notably, the most substantial compressive residual stress, measuring 770 MPa, is located at a depth of approximately 27 μm beneath the surface. The existence of these stresses is further substantiated by average misorientation measurements of the cross-sections. The duplex treatment led to a remarkable advancement in the material’s microhardness, exhibiting an increase of approximately 210% when compared to the untreated sample. Additionally, the ceramic coating itself demonstrates outstanding mechanical properties, with a nanohardness of 26 GPa, and an elasticity index (H/E) of 0.08. Furthermore, when subjected to scratch tests, the duplex-treated specimens exhibited enhanced durability attributed to the concurrent rise in surface roughness induced by the peening process. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier | en_GB |
dc.rights | info:eu-repo/semantics/openAccess | en_GB |
dc.subject | Titanium -- Surfaces | en_GB |
dc.subject | Titanium -- Metallurgy | en_GB |
dc.subject | Additive manufacturing | en_GB |
dc.subject | Shot peening | en_GB |
dc.title | Microstructural analysis of additively manufactured Ti–6Al–4V subjected to duplex surface treatment | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1016/j.matchemphys.2024.129303 | - |
dc.publication.title | Materials Chemistry and Physics | en_GB |
Appears in Collections: | Scholarly Works - FacEngMME |
Files in This Item:
File | Description | Size | Format | |
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Microstructural analysis of additively manufactured Ti 6Al 4V subjected to duplex surface treatment 2024.pdf | 12.25 MB | Adobe PDF | View/Open |
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