کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7983074 | 1514767 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hot deformation and processing maps of as-extruded Mg-9.8Gd-2.7Y-0.4Zr Mg alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The deformation behavior of as-extruded Mg-9.8Gd-2.7Y-0.4Zr Mg alloy is investigated by compression test with Gleeble-3500 thermal simulator at temperature of 648-723 K and strain rate of 0.01-5 sâ1. It is found that the flow stress behavior is described by the hyperbolic sine constitutive equation in which the determined average activation energy is 229.5 kJ/mol. Through the flow stresses behavior, the processing maps describing the variation of power dissipation efficiency, is constructed as a function of temperature and strain rate. The processing maps exhibit a domain of dynamic recrystallization (DRX) occurring at the temperature of 420-450 °C and strain rate of 0.01-0.1 sâ1, corresponding to the optimum hot working window. The instability zones of flow behavior are also recognized from the maps.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 576, 1 August 2013, Pages 101-107
Journal: Materials Science and Engineering: A - Volume 576, 1 August 2013, Pages 101-107
نویسندگان
H. Zhou, Q.D. Wang, B. Ye, W. Guo,