کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1638738 | 1517030 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of initial microstructure on superplastic deformation of AZ70 magnesium alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The mechanical properties and deformation mechanism of semi-continuously casting and as-extruded AZ70 magnesium alloys in a wide range of grain sizes (from 14 to 103 μm) were investigated at 653 K and 1Ã10â3 sâ1. It is discovered that with reducing grain size, flow stress is weakened and plasticity is improved and even superplasticity exhibits. SEM and OM were used to clarify the deformation mechanism. It is suggested that dynamic recrystallization (DRX) is the coordination deformation mechanism of grain boundary sliding (GBS) for coarse grain, and cavity and intracrystalline slip are the coordination deformation mechanisms of GBS for fine grain.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 20, Supplement 2, July 2010, Pages s527-s532
Journal: Transactions of Nonferrous Metals Society of China - Volume 20, Supplement 2, July 2010, Pages s527-s532
نویسندگان
Pan WANG, Li-hong WU, Shao-kang GUAN,