کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1580926 1514847 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Temperature and direction dependence of internal strain and texture evolution during deformation of uranium
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Temperature and direction dependence of internal strain and texture evolution during deformation of uranium
چکیده انگلیسی

Depleted uranium is of current programmatic interest at Los Alamos National Lab due to its high density and nuclear applications. At room temperature, depleted uranium displays an orthorhombic crystal structure with highly anisotropic mechanical and thermal properties. For instance, the coefficient of thermal expansion is roughly 20 × 10−6 °C−1 in the a and c directions, but near zero or slightly negative in the b direction. The innate anisotropy combined with thermo-mechanical processing during manufacture results in spatially varying residual stresses and crystallographic texture, which can cause distortion, and failure in completed parts, effectively wasting resources. This paper focuses on the development of residual stresses and textures during deformation at room and elevated temperatures with an eye on the future development of computational polycrystalline plasticity models based on the known micro-mechanical deformation mechanisms of the material.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 512, Issues 1–2, 25 June 2009, Pages 67–75
نویسندگان
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