Characterization of {beta}'' precipitate phase in a Mg-Dy-Gd-Nd alloy

Journal Article · Mon Oct 15 04:00:00 EDT 2007 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2006.08.011· OSTI ID:21062167

Dong, J; Zeng, X Q; Lu, C; Ding, W J ^[1]

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1. School of Material Science and Engineering, Shanghai Jiaotong University, Shanghai, 20030 (China)

The morphology and crystal structure of {beta}'' precipitate phases in a Mg-Dy-Gd-Nd system have been studied using transmission electron microscopy and X-ray diffraction. Three orientation relationships have been observed between {beta}'' precipitate phases and the {alpha} matrix phase with the habit plane parallel to {l_brace}112-bar 0{r_brace}{sub {alpha}}. The orientation relationship between the {beta}'' precipitates and the matrix is [0001]{sub {beta}}{sub ''}//[0001]{sub {alpha}}, [11-bar 00]{sub {beta}}{sub ''}//[11-bar 00]{sub {alpha}}. The structure of the {beta}''phase, with the interspaces between Dy/Gd/Nd atoms filled with magnesium atoms, is completely consistent with that of the matrix.

• OSTI ID: 21062167
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 10 Vol. 58; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL STRUCTURE
DYSPROSIUM ALLOYS
GADOLINIUM ALLOYS
HABIT PLANES
MAGNESIUM ALLOYS
MATRIX MATERIALS
MICROSTRUCTURE
MORPHOLOGY
NEODYMIUM ALLOYS
ORIENTATION
PRECIPITATION
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION