کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
799364 903465 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The mean free path of dislocations in nanoparticle and nanorod reinforced metal composites and implication for strengthening mechanisms
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
The mean free path of dislocations in nanoparticle and nanorod reinforced metal composites and implication for strengthening mechanisms
چکیده انگلیسی

The mean free path length of dislocations plays an important role in the plastic behavior of metals, which may be significantly enhanced by the addition of nanoparticles. The effects of particle distribution pattern, particle size, shape and volume fraction on the dislocation mean free path length and average obstacle distance are analyzed in two- and three-dimensional models. As the particle volume fraction increases, the dislocation mean free path length and average distance between dislocations obstacles can be significantly reduced, implying enhancement of strength. The random particle distribution exhibits the best combination of dislocation mean free path length and average obstacle distance. In addition, both dislocation mean free path and average obstacle distance can be significantly reduced by changing the particle shape from nanosphere to nanorod. The present analysis may provide useful information for designing the particle enforced composite materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanics Research Communications - Volume 34, Issue 3, April 2007, Pages 275–282
نویسندگان
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