کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5441231 1510382 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of pressure on structure and mechanical property in monatomic metallic glass
ترجمه فارسی عنوان
اثرات فشار بر ساختار و خواص مکانیکی در شیشه های یکنواخت فلزی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
In this work we studied the effects of pressure on the local structures and mechanical properties of pure iron metallic glasses based on molecular dynamics simulations. It is found that, at a quenching rate of 1 × 1013 K/s, glassy states are obtained for pressure not > 20 GPa and crystalline phases are obtained at 25 GPa. Voronoi analysis indicates that the local structure of glassy iron changes with pressure, and the degree of local fivefold symmetry in the quenched systems decreases as the pressure increases. Compression test results indicate a negative correlation between the pressure and the yield strength, with the strength of the glass obtained at 20 GPa being 0.56 GPa (or about 10%) lower than that at 0 GPa. This study sheds light on the understanding of pressure-induced changes of local structure and mechanical property of monatomic metallic glasses.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 464, 15 May 2017, Pages 1-4
نویسندگان
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