Abstract
The precipitation sequence of a Mg–2.1Gd–0.6Y–0.2Zr (at.%) alloy at 200 °C was investigated by transmission electron microscopy (TEM), and the chemical compositions of the precipitates observed in different stages of the sequence were analyzed by the three-dimensional atom probe (3DAP) technique. The precipitation sequence is described as supersaturated solid solution (SSS) → β″ (D0 19 Mg 3X) → β′ (bco Mg 15X 3) → β phase (Mg 5X). There are structural similarities in each phase and the phase evolution occurs continuously by decreasing the rare earth content when β″ transforms to β′.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have