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Enhanced Strength and Corrosion Resistance in Mg Alloys via Dense Ultrafine Twins and G.P. Zones

Project description

Engineering sustainable magnesium for a decarbonised future

While magnesium alloys offer unmatched weight savings, their industrial potential remains untapped due to the dual challenges of low structural strength and high corrosion susceptibility. Supported by the Marie Skłodowska-Curie Actions Programme, the CycMag project will design a specialised microstructure that simultaneously boosts strength and corrosion resistance. By applying multi-directional cyclic compression to dilute Mg-Al-Ca and Mg-Zn-Ca alloys, the researchers will replace problematic grain boundaries and precipitates with ultrafine twin boundaries and nanoscale G.P. zones. This approach aims to unlock the full potential of lightweight magnesium alloys for the transport and industrial sectors, directly supporting the EU’s Green Deal objectives. The goal is to make magnesium a sustainable, lightweight engineering solution for a decarbonised future.

Objective

Magnesium (Mg) alloys, known for their lightweight and high specific strength, are critical to the EU’s Green Deal and Critical Raw Materials Act—yet their broader use in transport and industry is limited by low strength and poor corrosion resistance. The microstructure of conventional Mg alloys typically fails to balance these critical properties, creating a long-standing trade-off. The CycMag project aims to solve this by engineering a novel microstructure: ultrafine twin boundaries (replacing most non-equilibrium grain boundaries) and nanoscale Guinier-Preston (G.P.) zones (replacing most intermetallic precipitates). This innovative approach promises simultaneous improvements in strength and corrosion resistance, addressing the barriers to wider Mg alloy adoption.

To achieve this, the project focuses on developing dilute Mg-Al-Ca and Mg-Zn-Ca alloys, leveraging their potential under specific processing conditions. The core method is multi-directional cyclic compression, a cutting-edge technique designed to induce the targeted microstructure. It integrates materials science, mechanical engineering, and electrochemistry: experiments cover alloy design, casting, and thermo-mechanical processing (with a secondment at CENIM to optimize extrusion/rolling), while advanced characterization tools—including 3D microscopy, in-situ SEM mechanical tests (EBSD/HR-DIC), and advanced electrochemical tests—will map microstructure evolution, validate twin/G.P. zone formation, and establish the processing-structure-properties links.

Beyond advancing Mg alloy technology, findings could inform the design of other high-strength, corrosion-resistant alloys. Combining the researcher’s expertise with the support of a leading Mg alloy research group (in IMDEA), the project is well-positioned to achieve its ambitious objectives, thereby strengthening the researcher’s expertise in advanced processing and characterization, laying a solid foundation for an independent research career.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

FUNDACION IMDEA MATERIALES
Net EU contribution
€ 209 914,56
Address
CALLE ERIC KANDEL 2 PARQUE CIENTIFICO Y TECNOLOGICO TECNOGETAFE
28906 Getafe
Spain
Region
Comunidad de Madrid Comunidad de Madrid Madrid
Activity type
Research Organisations
Links
Total cost
No data

Partners (1)