Journal article
Bio-tribocorrosive performance of additively manufactured Ti-6Al-4 V alloy via laser power bed fusion (L-PBF)
Progress in additive manufacturing, Vol.10, pp.5043-5056
02/12/2024
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Abstract
The tribocorrosion behaviour and performance of Ti-6Al-4 V alloy produced by laser powder bed fusion (L-PBF) was investigated in a simulated body-fluid environment and compared with that of the conventionally made alloy. The additively manufactured alloy included two main categories namely: as-printed and post-thermal treated samples (stress-relieved and annealed). Using a custom-designed tribometer, all the samples were tested in phosphate buffered saline plus 2 g/L Albumin solution under open circuit potential (OCP) and potentiostatic condition at 0.4 V/VAg/AgCl at sliding magnitude of 3 mm and frequency of 3 Hz for 5000 cycles. The key results included total, chemical, and mechanical volume losses together with surface damage characteristics of different samples. The L-PBF samples showed a much better tribocorrosion performance under both OCP and potentiostatic conditions when compared to the conventional alloy. As-printed samples showed a volume loss which was 60-70% of the volume loss measured for the conventional samples. The tribocorrosion performance of the as-printed sample was slightly improved by the annealing treatment, (around 5%), and the annealed samples showed a much better corrosion resistance and more stable oxide films. It is believed that the electrochemical reactions at the rubbed interface of the annealed samples played a significant role in improving their tribocorrosion resistance.
Details
- Title
- Bio-tribocorrosive performance of additively manufactured Ti-6Al-4 V alloy via laser power bed fusion (L-PBF)
- Creators
- Mohsen Feyzi - Flinders UniversityAlireza Dareh Baghi - The University of AdelaideKhosro Fallahnezhad - Flinders UniversityShahrooz Nafisi - The University of AdelaideReza Ghomashchi - The University of AdelaideReza Hashemi - Flinders University
- Publication Details
- Progress in additive manufacturing, Vol.10, pp.5043-5056
- Publisher
- Springer Nature
- Number of pages
- 14
- Identifiers
- 991013309827702368
- Copyright
- © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2024.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article