کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1580693 | 1514840 | 2009 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental analysis and constitutive modeling for the newly developed 2139-T8 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
Mechanical behavior of recently emerged 2139-T8 aluminum alloy, which is based on an Al-Cu-Mg-Ag system, has been characterized by uniaxial compression and tension experiments over a wide range of strain rates from 10â4 to 104 sâ1 and for temperatures from â60 to 300 °C. Driven by experimental results, modifications to widely used Johnson-Cook constitutive model has been proposed, and model parameters have been determined. It has been shown that modified Johnson-Cook (MJC) model satisfactorily captures rate- and temperature-dependent variations in flow stress through enhanced coupling between temperature and strain hardening as well as temperature and strain-rate sensitivity. The modified model also provides flow stress prediction over the entire range of quasi-static and dynamic regimes by a single continuous function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 520, Issues 1â2, 15 September 2009, Pages 56-65
Journal: Materials Science and Engineering: A - Volume 520, Issues 1â2, 15 September 2009, Pages 56-65
نویسندگان
M. Vural, J. Caro,