کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1576006 | 1514769 | 2013 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hot compressive flow stress modeling of homogenized AZ61 Mg alloy using strain-dependent constitutive equations
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The experimental stress-strain data from hot compression tests were used to establish constitutive equations in a homogenized cast AZ61 Mg alloy. Hot compression tests were conducted using the Gleeble 3500 thermal simulation machine in the temperature range of 250-450 °C and strain rate range of 1Ã10â3-1 sâ1. The constitutive analysis was performed based on the effect of strain on the constitutive parameters. Constitutive equations as a function of strain were constructed according to the hyperbolic sine constitutive law. The correlation between the strain-dependent constitutive parameters and flow behavior was analyzed. Results showed that variations in the constitutive parameters with strain were associated with the stress-strain behavior. A comparatively higher scattering was obtained at low strains based on the constitutive equation with the strain-dependent stress multiplier (α) determined by power and exponential laws. However, the constitutive analysis with a constant α determined by the hyperbolic sine constitutive equation showed better estimations between the calculated and experimental flow stresses at different temperatures and strain rate conditions used in this study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 574, 1 July 2013, Pages 17-24
Journal: Materials Science and Engineering: A - Volume 574, 1 July 2013, Pages 17-24
نویسندگان
Horng-yu Wu, Jie-chen Yang, Feng-jun Zhu, Cheng-tao Wu,