کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1626903 | 1516452 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Precipitation in a Mg–10Gd–3Y–0.4Zr (wt.%) alloy during isothermal ageing at 250 °C
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The precipitation sequence in a Mg–10Gd–3Y–0.4Zr (wt.%) alloy during isothermal ageing at 250 °C has been investigated using transmission electron microscopy. It is found that the precipitation sequence involves super-saturated solid solution (S.S.S.S.) → β″(D019) → β′(cbco) → β1(fcc) → β(fcc), which is similar to that of WE54 alloy but different from previously reported three-stage sequence: S.S.S.S. → β″(D019) → β′(cbco) → β (bcc). The metastable β′ phase, which plays an important role for the age hardening of the alloy, has a shape of convex lens and is very thermally stable at 250 °C. Formation of β1 phase appears to take place via an in situ transformation from a decomposed β′ phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 421, Issues 1–2, 14 September 2006, Pages 309–313
Journal: Journal of Alloys and Compounds - Volume 421, Issues 1–2, 14 September 2006, Pages 309–313
نویسندگان
S.M. He, X.Q. Zeng, L.M. Peng, X. Gao, J.F. Nie, W.J. Ding,