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Chemistry of nanoscale precipitates in Mg–2.1Gd–0.6Y–0.2Zr (at.%) alloy investigated by the atom probe technique
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. Th...
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Published in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2005-03, Vol.395 (1), p.301-306 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | 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′. |
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ISSN: | 0921-5093 1873-4936 |
DOI: | 10.1016/j.msea.2004.12.035 |