کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7221322 1470345 2013 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A comparative study on Johnson-Cook, modified Johnson-Cook and Arrhenius-type constitutive models to predict the high temperature flow stress in 20CrMo alloy steel
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
A comparative study on Johnson-Cook, modified Johnson-Cook and Arrhenius-type constitutive models to predict the high temperature flow stress in 20CrMo alloy steel
چکیده انگلیسی
The isothermal hot compression tests were conducted on a Gleeble-1500D thermal simulation machine, in a wide range of temperatures (1173-1373 K) and strain rates (1.5 × 10−3-1.5 × 10−2 s−1). Based on the experimental true strain-true stress data, the Johnson-Cook, modified Johnson-Cook and Arrhenius-type constitutive models were established for a 20CrMo alloy steel. A comparative study has been made on the accuracy and effectiveness of the three models to predict the high temperature flow stress. The results show that the predicted values by the Johnson-Cook model could not agree well with the experimental values except for under reference deformation conditions. However, the modified Johnson-Cook and Arrhenius-type models, which consider the coupled effects of strain rate and deformation temperature, could give a precise prediction of high temperature flow stress for the studied steel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design (1980-2015) - Volume 52, December 2013, Pages 677-685
نویسندگان
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