February 2019: Song Tang & Tongzheng (Thomas) Xin “Precipitation strengthening in an ultralight magnesium alloy”
"Uncovering the strengthening nature in ultralight magnesium alloys"
Body-centred cubic magnesium-lithium-aluminium-base alloys are the lightest of all the structural alloys, which offer significant potential use in many technological, industrial and consumer marketplaces. But their strengthening mechanisms remain unrecognised hitherto.
We show that strengthening are induced by the precipitation of semi-coherent D03-Mg3Al nanoparticles during rapid cooling. A new methodology for generating structurally stable, strong and light Mg-Li-Al alloys was proposed and validated. These findings provide new information for the design of second-generation ultra-lightweight, high-strength, corrosion-resistant Mg-Li-Al-based alloys with a more stable mechanical property profile.
Read the full paper, as published in Nature Communications (10,1003 (2019))