کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7875305 1509521 2018 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Elastic properties of AlxCrMnFeCoNi (0 ≤ x ≤ 5) high-entropy alloys from ab initio theory
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Elastic properties of AlxCrMnFeCoNi (0 ≤ x ≤ 5) high-entropy alloys from ab initio theory
چکیده انگلیسی
The elastic properties (left upper panel) of paramagnetic bcc and fcc AlxCrMnFeCoNi (0 ≤ x ≤ 5) high-entropy alloys have been systematically investigated by using the first-principles alloy theory method. Despite the calculated lattice constants for both phases increase linearly with increasing Al content, the theoretical elastic properties and Zener anisotropy possess complex composition dependences. Pugh criterion (Pugh0) (right upper panel) are shown as a function of Zener anisotropy AZ in the Voigt, Reuss and Hill averaging methods. The brittle/ductile transitions formulated in terms of the Cauchy pressure and the Pugh ratio become consistent only when the strong elastic anisotropy is considered. Moreover, Three-dimensional surface plots of the singlecrystal Young's moduli (lower panel) for AlxCrMnFeCoNi alloys indicate that the largest (smallest) value of E is along the <111> (<100>) direction in both phases.312
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 155, 15 August 2018, Pages 12-22
نویسندگان
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