کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1625227 1516426 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mg–Gd–Y system phase diagram calculation and experimental clarification
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Mg–Gd–Y system phase diagram calculation and experimental clarification
چکیده انگلیسی

Phase equilibrium of the Mg–Gd–Y system in Mg-rich corner was calculated in detail by phase diagram calculation software Pandat and thermodynamic database for Mg alloys. The calculated phase diagrams were compared with the key experimental results of DSC analysis for the alloys Mg–1 wt%Gd–7 wt%Y and Mg–5 wt%Gd–2 wt%Y. The solidification and precipitation process of the newly developed alloy Mg–12 wt%Gd–4 wt%Y–0.6 wt%Zr were analyzed. The detailed comparison strongly supports the reliability of the selected thermodynamic description based on the results of thermodynamic calculation. It is clarified that when the Mg–1Gd–7Y alloy ends its solidification and cools down continuously, the second phase Mg24Y5 firstly precipitated from solid solution of magnesium and then the GdMg5 phase precipitated at relative lower temperature. But for Mg–5Gd–2Y alloy, the precipitation sequence of Mg24Y5 and GdMg5 are in reverse order. Referring the calculated Mg–Gd–Y system phase diagrams, the suitable thermal mechanical processing and heat-treatment processes of newly designed and developed alloy Mg–12 wt%Gd–4 wt%Y–0.6 wt%Zr has been done.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 450, Issues 1–2, 14 February 2008, Pages 446–451
نویسندگان
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