کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1638751 1517030 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of strain rate and temperature on microstructure and texture for AZ31 during uniaxial compression
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Effects of strain rate and temperature on microstructure and texture for AZ31 during uniaxial compression
چکیده انگلیسی

In order to investigate the effects of strain rate and temperature on the microstructure and texture evolution during warm deformation of wrought Mg alloy, AZ31 extruded rods were cut into cylinder samples with the dimension of d8 mm×12 mm. The samples were compressed using a Gleeble 1500D thermo-mechanical simulation machine at various strain rates (0.001, 0.01, 0.1, 1 and 5 s−1) and various temperatures (300, 350, 400 and 450 °C). The microstructure and texture of the compressed samples at the same strain under different deformation conditions were studied and compared by electron backscatter diffraction (EBSD) in scanning electron microscope (SEM). The results show that the size of recrystallized grains in the deformed samples generally increases with the decrease of strain rate and the increase of temperature. After 50% reduction, most basal planes are aligned perpendicular to the compression direction at relatively high strain rate (>0.01 s−1) or low temperature (<350 °C). The optimized strain rate is 0.1 s−1 for uniaxial compression at 300 °C, which produces about 80% of small grains (<5 μm).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Transactions of Nonferrous Metals Society of China - Volume 20, Supplement 2, July 2010, Pages s594-s598