December: Dr Wanqiang Xu: A strong, ductile and corrosion resistant magnesium alloy
An ultra-lightweight Mg-Li-based alloy was processed by a simple route to generate a solute nanostructure in a body centre cubic matrix (Fig. 1). This structure created a strong and ductile alloy that was also more corrosion resistant than other commercial Mg alloys reported so far. The high corrosion resistance of the alloy is argued to be a result of a uniform lithium carbonate film that forms rapidly on its surface. Such an ultra-lightweight alloy has potential use in diverse applications including the automotive, aerospace, biomedical, sporting and electronic goods sectors.
Click here to view the full article, as published in Nature Materials 14, pp1229-1235 (2015)
Image: Atom probe tomography (APT) reconstruction of 40x40x70 nm3 volumes of the alloy showing the solute nanostructure evolution with processing: WQ = Water Quenched state; (WQA) = WQ and Aged state, and (c) WQA and Rolled state.