کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8208169 1531901 2018 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation on AlP as the heterogeneous nucleus of Mg2Si in Al-Mg2Si alloys by experimental observation and first-principles calculation
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Investigation on AlP as the heterogeneous nucleus of Mg2Si in Al-Mg2Si alloys by experimental observation and first-principles calculation
چکیده انگلیسی
The microstructural evolution of primary Mg2Si in Al-20%Mg2Si with Al-3%P master alloy was observed by scanning electron microscope. And the interfacial properties of AlP/Mg2Si interface were investigated using first-principles calculations. The calculation results show that AlP(1 0 0)/Mg2Si(2 1 1) and AlP(3 3 1)/Mg2Si(1 1 0) interfaces can form steadily. P-terminated AlP(1 0 0)/Mg2Si(2 1 1) interface with the largest work of adhesion (4.13 J/m2) is theoretically the most stable. The interfacial electronic structure reveals that there are covalent Si-Al, Si-P and Mg-P bonds existing between AlP and Mg2Si slabs. Due to the AlP particles as effective heterogeneous nucleus of Mg2Si, primary Mg2Si particles change from dendrite to octahedron/truncated octahedron, and their sizes decrease to ∼20 μm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Results in Physics - Volume 8, March 2018, Pages 146-152
نویسندگان
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