کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1583379 1514892 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of the route and strain of equal-channel angular pressing on structure and properties of oxygen-free copper
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Effect of the route and strain of equal-channel angular pressing on structure and properties of oxygen-free copper
چکیده انگلیسی
Structure and properties of oxygen-free copper (99.98%) in dependence on strain and routes during equal-channel angular (ECA) pressing at room temperature up to strains ɛ ∼ 29 are studied. At ɛ ∼ 29, according to orientation imaging microscopy (OIM) analysis, the minimum size of structure elements, 230 nm, corresponds to route Bc, and the maximum fraction of high-angle boundaries, 77%, corresponds to route A. The sizes of structure elements revealed by analysis were larger than those determined by transmission electron microscopy (TEM). The strength characteristics of oxygen-free copper after equal-channel angular pressing increase by a factor of 1.5-1.7 and remain virtually constant in the deformation range ɛ ∼ 6-29 for all routes. The maximum UTS and YS values correspond to route Bc. The ductility decreases after the first pass and increases after ten passes, especially for route Bc.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 462, Issues 1–2, 25 July 2007, Pages 132-138
نویسندگان
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