کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6749147 1430254 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of grain size on the indentation hardness for polycrystalline materials by the modified strain gradient theory
ترجمه فارسی عنوان
اثر اندازه دانه بر روی سختی اندامی برای مواد پلی کریستالی توسط نظریه گرادینت اصلاح شده
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
Numerous indentation tests in the micrometer and nanometer scale have shown that the measured hardness decreases significantly with increasing indentation depth, and this is known as the indentation size effect (ISE). However, several other nanoindentation results for polycrystalline materials show that the indentation hardness increases with increasing indentation depth because of the grain boundary (GB) effect. In this work, we propose a new model for the indentation test using the modified strain gradient plasticity theory. The GB effect is considered by evaluating the density of GNDs on the GB. Using the proposed model, the indentation hardness of polycrystalline materials in micrometer-scale structures is investigated, and compared with experimental results from other researchers.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Solids and Structures - Volume 50, Issue 18, 15 August 2013, Pages 2719-2724
نویسندگان
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