کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1611758 1516295 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of Mg-rich clusters in the C36 phase of the Mg-5Al-3Ca-0.7Sr-0.2Mn alloy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Characterization of Mg-rich clusters in the C36 phase of the Mg-5Al-3Ca-0.7Sr-0.2Mn alloy
چکیده انگلیسی
In this paper, characterization of clusters embedded in the C36 eutectic phase using TEM, STEM and XRD methods is presented. Disk-shaped Mg-rich clusters with sizes less than 150 nm were observed in the sand-cast Mg-5Al-3Ca-0.7Sr-0.2Mn alloy. The composition of the C36 eutectic phase was 24.1Mg-47.2Al-27.8Ca-0.9Sr and that of the Mg-rich clusters was 53.1Mg-33Al-13.1Ca-0.8Sr in at.%. The lattice parameters of the C36 phase were determined to be a0 = 5.827 Ǻ and c0 = 18.834 Ǻ, whereas for the clusters they were determined to be a0 = 5.586 Ǻ and c0 = 18.834 Ǻ. The chemical compositions of the eutectic phase and clusters, and the decrease of the lattice parameters with increasing magnesium content in the C36 phases suggest that Mg atoms occupy both Al and Ca sites in the C36 phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 598, 15 June 2014, Pages 95-105
نویسندگان
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