کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1562229 999582 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction Charpy impact energy of bcc and fcc functionally graded steels in crack divider configuration by strain gradient plasticity theory
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Prediction Charpy impact energy of bcc and fcc functionally graded steels in crack divider configuration by strain gradient plasticity theory
چکیده انگلیسی

In the present study, the Charpy impact energy of bcc ferritic and fcc austenitic functionally graded steels produced by electroslag remelting process has been investigated. To produce functionally graded steels, an electrode consists of two different spot welded slices from plain carbon and austenitic stainless steels were utilized. Functionally graded steel containing graded layers of ferrite or austenite may be fabricated via diffusion of alloying elements during remelting stage. Charpy impact energy of the specimens has been obtained experimentally in crack divider configuration and modeled with mechanism-based strain gradient plasticity theory. In this regard, the density of the statistically stored dislocations and that of geometrically necessary dislocations was related to the Vickers hardness of each layer. Afterwards, the predicted Vickers hardness of each layer was related to its Charpy impact energy. Finally, Charpy impact energy of each specimen was calculated by using the rule of mixtures. The predicted Charpy impact energies are in good agreement with those obtained from the experiments.


► Functionally graded steels produced by electroslag remelting.
► Mechanism-based strain gradient plasticity theory.
► Charpy impact energy and its relation with hardness profile.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 50, Issue 11, October–November 2011, Pages 3178–3183
نویسندگان
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