کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7880900 1509593 2015 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New orientation formation and growth during primary recrystallization in stable single crystals of three face-centred cubic metals
ترجمه فارسی عنوان
شکل گیری و رشد گرایش جدید در طی بازسازی اولیه در کریستالهای پایدار سه فلز متخلخل متمرکز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
For Ni, Cu and Cu-2%Al and (1 1 0)[0 0 −1] and (1 1 0)[1 −1 −2] initial orientations at the initial stages of recrystallization, the appearance of a specific number of new orientation groups of new grains has been demonstrated. The orientation relations across the recrystallization front are characterized by a high proportion of angles in the range 25-35° and 45-55° around axes mostly grouped about the 〈1 2 2〉, 〈1 1 1〉, 〈1 2 3〉 and 〈1 1 2〉 directions. A local minimum was noted for the disorientation angle densities close to 40° in all cases. For a single isolated nucleus of uniform orientation, the rotation axes are usually grouped around one of the normals of all four {1 1 1} planes but do not (or only rarely) coincide with them. The orientation of the growing new grain quickly transforms through the formation of a first generation twins. The most frequent situation occurs when the normal of the twinning face plane is situated near the rotation axis, around which the crystal lattice of the 'primary nuclei' rotates. Based on the anisotropy of grain growth a possible mechanism of orientation generation and grain growth by thermally activation movement of dislocation families, on {1 1 1} planes is proposed.87
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 83, 15 January 2015, Pages 120-136
نویسندگان
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