کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1637456 1517004 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructural refinement and mechanical properties of direct extruded ZM21 magnesium alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Microstructural refinement and mechanical properties of direct extruded ZM21 magnesium alloys
چکیده انگلیسی
Cast ZM21 magnesium alloys were subjected to symmetric extrusion at four different temperatures (200, 250, 300 and 350 °C) with three extrusion ratios of 4:1, 9:1 and 16:1, respectively. The effects of extrusion parameters such as temperature and extrusion ratio were studied by optical microscopy, X-ray diffraction (XRD) and tensile test. The optical micrographs exhibited various stages of recrystallization, i.e., partial to full recrystallization influencing mechanical properties to good extent. Higher extrusion temperature resulted in coarse grains, whereas finer grains were obtained at higher extrusion ratios. Ultimate tensile strength of this alloy was increased from 160 MPa to 316 MPa after extrusion at 250 °C with an extrusion ratio of 9:1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 21, Issue 10, October 2011, Pages 2154-2159
نویسندگان
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