کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7964433 1514173 2016 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Texture formation in orthorhombic alpha-uranium under simple compression and rolling to high strains
ترجمه فارسی عنوان
تشکیل بافت در آلفا اورانیوم آرترومبیک تحت فشرده سازی ساده و نورد به سویه های بالا
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
چکیده انگلیسی
We study the mechanical response and texture evolution of alpha-uranium during simple compression and rolling at 573 K. In order to determine the underlying mechanisms governing plasticity and texture formation, we perform detailed characterizations using electron backscattered diffraction and constitutive modeling using a dislocation-density based hardening law within a visco-plastic self-consistent homogenization. We show that the model achieves good agreement with experimental measurements in terms of texture and stress-strain response. From detailed comparison of experimental and modeling results, we infer that in both through-thickness compression (TTC) and rolling at 573K, the active slip modes are floor slip (001)[100] and chimney slip 1/2{110}〈11¯0〉 with slightly different ratios. However, {130}〈31¯0〉 twinning is not active in TTC compression but profuse during rolling. Further analysis indicates that during rolling, floor slip (001)[100] results in the formation of two pronounced (001) texture peaks tilted 10-15° away from the normal toward the rolling direction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 473, May 2016, Pages 143-156
نویسندگان
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