Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistance
This study investigates the innovative approach of utilizing multiple alloying elements at micro-alloying levels to enhance solution strengthening and their contrasting behaviour in higher compositions leading to intermetallic formation. Two magnesium-based alloys were developed: a high entropy allo...
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Elsevier
2025-06-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025012678 |
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| author | K Renuga Devi Dondapati Sreekanth |
| author_facet | K Renuga Devi Dondapati Sreekanth |
| author_sort | K Renuga Devi |
| collection | DOAJ |
| description | This study investigates the innovative approach of utilizing multiple alloying elements at micro-alloying levels to enhance solution strengthening and their contrasting behaviour in higher compositions leading to intermetallic formation. Two magnesium-based alloys were developed: a high entropy alloy (HEA) Mg82(CaMnZn)15Sn2(AgCeSr)1 (at.%) and a micro-alloy (MA) Mg-0.1Ag-0.15Ca-0.2Ce-0.1Mn-0.1Sn-0.2Sr-0.5Zn (wt.%). The micro-alloy demonstrated exceptional mechanical performance, achieving a tensile strength of 203 MPa and an impressive elongation to failure of 21 %, underscoring its potential for load-bearing applications. To enhance surface properties and corrosion resistance, plasma electrolytic oxidation (PEO) treatment was applied, resulting in significantly improved surface hardness and corrosion resistance. Notably, the PEO-treated micro-alloy achieved a corrosion current density (icorr) of 1.24 × 10⁻⁸ A/cm² in simulated body fluid (SBF), indicative of its superior degradation resistance. Bioactivity evaluations further revealed a stable pH profile and a near-stoichiometric Ca/P ratio of 1.66 on the PEO-coated micro-alloy surface, confirming its enhanced osteoconductivity and potential for biomedical applications. This work establishes a foundation for advancing magnesium-based alloys tailored for orthopaedic implants and other biomedical devices. |
| format | Article |
| id | doaj-art-5f1c672e1b444c1bba2d535706efadd4 |
| institution | OA Journals |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
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| series | Results in Engineering |
| spelling | doaj-art-5f1c672e1b444c1bba2d535706efadd42025-08-20T01:49:52ZengElsevierResults in Engineering2590-12302025-06-012610519310.1016/j.rineng.2025.105193Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistanceK Renuga Devi0Dondapati Sreekanth1School of Mechanical Engineering, Vellore Institute of Technology, Chennai 600127, IndiaCorresponding author.; School of Mechanical Engineering, Vellore Institute of Technology, Chennai 600127, IndiaThis study investigates the innovative approach of utilizing multiple alloying elements at micro-alloying levels to enhance solution strengthening and their contrasting behaviour in higher compositions leading to intermetallic formation. Two magnesium-based alloys were developed: a high entropy alloy (HEA) Mg82(CaMnZn)15Sn2(AgCeSr)1 (at.%) and a micro-alloy (MA) Mg-0.1Ag-0.15Ca-0.2Ce-0.1Mn-0.1Sn-0.2Sr-0.5Zn (wt.%). The micro-alloy demonstrated exceptional mechanical performance, achieving a tensile strength of 203 MPa and an impressive elongation to failure of 21 %, underscoring its potential for load-bearing applications. To enhance surface properties and corrosion resistance, plasma electrolytic oxidation (PEO) treatment was applied, resulting in significantly improved surface hardness and corrosion resistance. Notably, the PEO-treated micro-alloy achieved a corrosion current density (icorr) of 1.24 × 10⁻⁸ A/cm² in simulated body fluid (SBF), indicative of its superior degradation resistance. Bioactivity evaluations further revealed a stable pH profile and a near-stoichiometric Ca/P ratio of 1.66 on the PEO-coated micro-alloy surface, confirming its enhanced osteoconductivity and potential for biomedical applications. This work establishes a foundation for advancing magnesium-based alloys tailored for orthopaedic implants and other biomedical devices.http://www.sciencedirect.com/science/article/pii/S2590123025012678Magnesium alloyPlasma electrolytic oxidationMicro alloyingHigh entropy alloyCorrosionBioactivity |
| spellingShingle | K Renuga Devi Dondapati Sreekanth Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistance Results in Engineering Magnesium alloy Plasma electrolytic oxidation Micro alloying High entropy alloy Corrosion Bioactivity |
| title | Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistance |
| title_full | Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistance |
| title_fullStr | Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistance |
| title_full_unstemmed | Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistance |
| title_short | Novel multicomponent magnesium alloys: High strength-elongation synergy and PEO-driven corrosion resistance |
| title_sort | novel multicomponent magnesium alloys high strength elongation synergy and peo driven corrosion resistance |
| topic | Magnesium alloy Plasma electrolytic oxidation Micro alloying High entropy alloy Corrosion Bioactivity |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025012678 |
| work_keys_str_mv | AT krenugadevi novelmulticomponentmagnesiumalloyshighstrengthelongationsynergyandpeodrivencorrosionresistance AT dondapatisreekanth novelmulticomponentmagnesiumalloyshighstrengthelongationsynergyandpeodrivencorrosionresistance |