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Ahuir-Torres, JI, Gibbons, GJ, West, G, Das, A and Kotadia, HR (2023) Understanding the corrosion behaviour of Al-Mg alloy fabricated using a Laser Powder Bed Fusion (L-PBF) Additive Manufacturing (AM) process. Journal of Alloys and Compounds, 969. ISSN 0925-8388
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Understanding the corrosion behaviour of AI-Mg alloy fabricated using a laser powder bed fusion (L-PBF) additive manufacturing (AM) process.pdf - Published Version Available under License Creative Commons Attribution. Download (17MB) | Preview |
Abstract
Metal additive manufacturing (AM) is an emerging disruptive technology capable of manufacturing complex shaped components that are difficult to manufacture through conventional methods. However, the corrosion behaviour of AM fabricated parts must be considered for safety critical applications. For this reason, we have studied the relationship between AM fabricated Scalmalloy (Al-Mg-Sc-Zr) microstructures and their corresponding corrosion behaviours. This comparison has been drawn against a comparable commercial Al-Mg alloy (5182). The corrosion resistance of the samples in salt water was assessed via various electrochemical analytics techniques. It was observed that Scalmalloy produced better corrosion resistance than 5182 Al-alloy. This can be attributed to the spontaneous formation of a passive film on refined AM microstructure and the presence of Sc and Zr, specifically when samples were fabricated with higher density (less porosity). The alloys’ corrosion mechanisms were dependent on immersion time and the microstructural features of the samples.
| Item Type: | Article |
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| Uncontrolled Keywords: | 0204 Condensed Matter Physics; 0912 Materials Engineering; 0914 Resources Engineering and Extractive Metallurgy; Materials |
| Subjects: | T Technology > TN Mining engineering. Metallurgy T Technology > TP Chemical technology |
| Divisions: | Engineering |
| Publisher: | Elsevier BV |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 27 Oct 2023 14:43 |
| Last Modified: | 27 Oct 2023 14:45 |
| DOI or ID number: | 10.1016/j.jallcom.2023.172300 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/21755 |
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