کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1582265 1514874 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Contribution of Orowan strengthening effect in particulate-reinforced metal matrix nanocomposites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Contribution of Orowan strengthening effect in particulate-reinforced metal matrix nanocomposites
چکیده انگلیسی

The relative contribution of three strengthening factors in particulate-reinforced metal matrix nanocomposites (MMNCs), namely, load-bearing effect, enhanced dislocation density strengthening effect and Orowan strengthening effect, is evaluated. Orowan strengthening mechanism is found to play a significant role in MMNCs. The relative contribution of Orowan strengthening effect increases with decreasing size of nanoparticles. However, there exists a critical particle size below which the Orowan strengthening effect drops abruptly. The critical particle size, independent of the volume fraction of nanoparticles, is found to be about 5.44 times the magnitude of the Burgers vector of dislocations in the matrix.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volumes 483–484, 15 June 2008, Pages 148–152
نویسندگان
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