Mapping the chemistry within, and the strain around, Al-alloy precipitates at atomic resolution by multi-frame scanning transmission electron microscopy
Journal article, Peer reviewed
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OriginalversjonMicroscopy and Microanalysis. 2017, 23 384-385. 10.1017/S1431927617002604
Al-Mg-Si(-Cu)alloys, used primarily in the transportation sector, are strengthened by nano-sized precipitate particles. There is a plethora of possible phases, depending onwhich elements are added to the alloy and how the material is heat treated.Here we present results fromthe S, β’’, β’Geand Q’ phases,which allformrod-shaped precipitate with typical dimensions 7x7x50 nm. These phases are meta-stable, which means that they cannot exist outside the Al matrix.