کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1812022 1025606 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Anisotropy models in precise crystallite size determination of mechanically alloyed powders
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Anisotropy models in precise crystallite size determination of mechanically alloyed powders
چکیده انگلیسی

Nanocrystalline AA 4032 alloy powder was synthesized by high-energy ball milling from elemental powders for 30 h duration. XRD and TEM results reveal that the powder is cubic and nanocrystalline in nature. X-ray peak broadening analysis was used to evaluate the lattice strain and the crystallite size using the Williamson–Hall analysis with three different models viz., uniform deformation, uniform deformation stress and uniform deformation energy density. The root mean square (RMS) strain was calculated from the interplanar spacing and the strain estimated from the three models. The three models yield different strain values due to the anisotropic nature of the material. The energy density model is proposed to be the best fit model among the three as severe lattice strain is associated with ball milled powders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 406, Issue 2, 15 January 2011, Pages 165–168
نویسندگان
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