کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1576664 | 1514784 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Stress-strain response of textured AZ31B magnesium alloy under uniaxial tension at the different strain rates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Stress-strain response of textured AZ31B magnesium alloy under uniaxial tension at the different strain rates Stress-strain response of textured AZ31B magnesium alloy under uniaxial tension at the different strain rates](/preview/png/1576664.png)
چکیده انگلیسی
Grain orientation and deformation strain rate have impact on mechanical behaviors of magnesium alloys through their effect on the deformation modes. In this paper, uniaxial tensile tests were conducted at room temperature under various strain rates, from 2.8Ã10â5Â sâ1 to 1.1Ã10â1Â sâ1, on two kinds of AZ31B magnesium alloy samples which possess fiber texture and spread texture, respectively. It was found that the flow stress-strain curves of the samples with the fiber texture show a concave down shape and a yielding stress higher than that of the samples with the spread texture. The samples with the spread texture present a linear shaped true stress-strain flow curve. A “quasi horizontal step” appears on the stress-strain curves at the high strain rates, related mainly to {10-12} tension twinning that becomes an important deformation mode of grains. It was believed that the difference of stress-strain responses between the two kinds of tensile samples results from the difference of the slip modes, the contribution of the slips to plastic strain decreases with the increment of strain rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 559, 1 January 2013, Pages 307-313
Journal: Materials Science and Engineering: A - Volume 559, 1 January 2013, Pages 307-313
نویسندگان
C.J. Geng, B.L. Wu, X.H. Du, Y.D. Wang, Y.D. Zhang, F. Wagner, C. Esling,