A high-specific-strength and corrosion-resistant magnesium alloy.

By W. Xu, Nick Birbilis, G. Sha, Yu Wang, J. Daniels, Yang Xiao, M. Ferry. Nature Materials, 2015

696 citations recorded by the source corpus.

Ultra-lightweight alloys with high strength, ductility and corrosion resistance are desirable for applications in the automotive, aerospace, defence, biomedical, sporting and electronic goods sectors. Ductility and corrosion resistance are generally inversely correlated with strength, making it difficult to optimize all three simultaneously. Here we design an ultralow density (1.4 g cm(-3)) Mg-Li-based alloy that is strong, ductile, and more corrosion resistant than Mg-based alloys reported so far. The alloy is Li-rich and a solute nanostructure within a body-centred cubic matrix is achieved by a series of extrusion, heat-treatment and rolling processes. Corrosion resistance from the environment is believed to occur by a uniform lithium carbonate film in which surface coverage is much greater than in traditional hexagonal close-packed Mg-based alloys, explaining the superior corrosion resistance of the alloy.

Subfields: Biomaterials, Materials Chemistry, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/21ba0764817c78c9e29833bb476e2a88563e8fe8

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Citations in the corpus

Fundamentals and advances in magnesium alloy corrosion (2017, methodology): “The inset in d denotes the solute nanostructure [35].”
Magnesium extrusion alloys: a review of developments and prospects (2019, background): “tection to an underlying Mg alloy was observed in an extruded Mg–Li alloy with a body centred cubic structure (owing to <10 wt-% Li addition) [24].”