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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Experimental analysis and constitutive modeling for the newly developed 2139-T8 alloy
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 10−4 to 104 s−1 and for temperatures from −60 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 1–2, 15 September 2009, Pages 56-65
نویسندگان
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