کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9796619 | 1514950 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Prediction of cleavage fracture for a low-alloy steel in the ductile-to-brittle transition temperature range
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This paper attempts to predict the cleavage fracture probability for a low-alloy bainitic steel. Fractographic analysis of broken compact tension (CT) and Charpy V-notch (CVN) specimens was performed. An evolution of physical mechanisms of cleavage initiation was found: cracked-particle-induced cleavage was observed at low temperature, whereas a plasticity-induced mechanism was assumed as temperature increases. To take into account these observations, temperature-dependent Weibull parameters were used in the Beremin model. The introduction of a threshold cleavage stress was necessary to account for the skewness of the fracture probability distribution. With these parameters identified on the instrumented Charpy data set, the fracture toughness Jc was successfully predicted in the DBTT range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 391, Issues 1â2, 25 January 2005, Pages 188-197
Journal: Materials Science and Engineering: A - Volume 391, Issues 1â2, 25 January 2005, Pages 188-197
نویسندگان
P. Haušild, C. Berdin, P. Bompard,