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Published in:
2016 | OriginalPaper | Chapter
Precipitation Process in Mg-Nd-Zn-Zr-Gd/Y Alloy
Authors : J. H. Li, G. Sha, P. Schumacher, S. P. Ringer
Published in: Magnesium Technology 2011
Publisher: Springer International Publishing
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Transmission electron microscopy (TEM) and atom probe tomography (APT) were employed to investigate the solute clusters and precipitates formed in different Mg-Nd-Zn-Zr-Gd/Y alloys aged at 200 °C up to 100 h. TEM characterizations confirmed the precipitation in these alloys involved the formation of precipitates such as β″, β′, β1 and β. Most precipitates habited on (0110)α-Mg and a few thin plate (of 1–2 atomic layers in thickness) lying on (0001)α-Mg. APT analyses revealed that the precipitates were enriched with Nd, Zn and Gd. Moreover, Nd partitioned more strongly into the precipitates than Gd and Zn. In contrast, Y was less prone to partition into precipitates than other alloying elements in these alloys.