Improved corrosion resistance of magnesium alloy prepared by selective laser melting through T4 heat treatment for biomedical applications
Journal of Materials Research and Technology, ISSN: 2238-7854, Vol: 27, Page: 813-825
2023
- 7Citations
- 18Captures
- 1Mentions
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Reports from Xiangtan University Highlight Recent Research in Materials Research (Improved corrosion resistance of magnesium alloy prepared by selective laser melting through T4 heat treatment for biomedical applications)
2023 NOV 06 (NewsRx) -- By a News Reporter-Staff News Editor at Tech Daily News -- New study results on materials research have been published.
Article Description
Selective laser melting (SLM) technology has broad prospects for developing magnesium alloys in structural and biomedical applications. The effects of T4 heat treatment on microstructure, mechanical properties and corrosion resistance of as-built AZ91D alloy were investigated. The results showed that after T4 treatment, β-Mg 17 Al 12 phases distributed around the matrix changed from networks to diffuse dots and then disappeared at 420 °C for 1 h. The tensile strength and hardness of AZ91D alloy decreased after T4 treatment. In addition, electrochemical and immersion experiments showed that the corrosion resistance was greatly improved after solution. Compared with the as-built AZ91D alloy, the solution-treat sample exhibited higher corrosion resistance in Hanks' solution, and its corrosion current density was reduced by 70%, hydrogen evolution rate by 57%, and corrosion rate by about 78% in the weightless experiment. In this study, after solution-treat, the corrosion resistance of as-built AZ91D can be significantly improved while meeting the mechanical requirement of degradable alloys, and has great potential for biomedical applications.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2238785423024328; http://dx.doi.org/10.1016/j.jmrt.2023.09.306; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85173587376&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2238785423024328; https://dx.doi.org/10.1016/j.jmrt.2023.09.306
Elsevier BV
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