کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1601687 1515892 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phase stability of Cu2Mg and CuMg2 compounds against noncrystallizations analyzed with a plastic crystal model
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Phase stability of Cu2Mg and CuMg2 compounds against noncrystallizations analyzed with a plastic crystal model
چکیده انگلیسی

The phase stabilities of Cu2Mg and CuMg2 compounds were analyzed for their noncrystallizations with molecular dynamics (MD) simulations based on the plastic crystal model (PCM), which includes a series of processes for random rotations of hypothetical clusters around their centers of mass, relaxation and annealing. The calculation results in terms of pair-distribution functions reveal that the Cu2Mg alloy created with PCM tends to form in a crystalline structure, whereas the CuMg2 alloy forms in a noncrystalline structure. MD simulations based on PCM are validated because they are consistent with the experimental results indicating that the compositions for the Cu2Mg and CuMg2 alloys are outside and inside the amorphous-forming composition range (AFCR), respectively. PCM is of great importance due to its agreement with the experimental data on AFCR, which has yet to be obtained using conventional MD methods through quenching from a liquid phase.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 16, Issues 11–12, November–December 2008, Pages 1273–1278
نویسندگان
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