کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1582082 1514867 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the strain distribution during extrusion through a bent channel
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
On the strain distribution during extrusion through a bent channel
چکیده انگلیسی
The concept of equal channel angular pressing (ECAP) as a method of imparting significant amount of work to materials without causing reduction in section size to produce fine grain structure was developed in early 1980s. Several modifications are being made to the theory to accommodate the observed deviations in behaviour of materials during processing. In all these analyses, it is assumed that the material moves at a constant speed across the whole cross-section. In this paper we examine the strain experienced by materials when they are extruded through a bent channel under the assumption that cross-sectional planes remain planar, as in elastic bending, which does not permit constant speed of movement of the material across the cross-section. Finite element analysis (FEA) of extrusion through bent channel led to discovery of a new mechanism by which shear is induced in the material apart from the expected tensile and compressive strains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 491, Issues 1–2, 15 September 2008, Pages 501-506
نویسندگان
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