کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1479828 991428 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Constitutive equation and microstructure evaluation of an extruded aluminum alloy
ترجمه فارسی عنوان
معادله اساسی و ارزیابی ریزساختار یک آلیاژ آلومینیومی اکسترود شده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی

The flow-stress behavior of an extruded aluminum alloy has been studied by conducting a set of warm and hot compression tests. The compression tests were carried out in the temperature range of 373 K–773 K and strain rates of 0.001, 0.01 and 0.1 s−1, up to a strain of 0.5. Based on the results obtained from these tests, a mathematical model was obtained to predict flow stress for a given strain. The effect of temperature and strain rate on deformation behavior was ascertained by determining the Zener–Hollomon parameter. The influence of strain has been incorporated by employing an Arrhenius-type constitutive equation, considering the related material constants as functions of strain. The comparison of results indicated good agreement between the predicted and measured flow-stress values in the relevant temperature range. The correlation coefficient and average absolute relative error of the model were found to be 0.9965 and 4.26% respectively confirming good accuracy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Research and Technology - Volume 5, Issue 1, January–March 2016, Pages 21–28
نویسندگان
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