کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7987851 | 1515528 | 2018 | 17 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of voids distribution on the deformation behavior of nanocrystalline palladium
ترجمه فارسی عنوان
تأثیر توزیع حفره بر رفتار تغییر شکل پالادیوم نانوکریستال
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کلمات کلیدی
مواد نانوکریستال، ویژگی های مکانیکی، وایس شبیه سازی دینامیک مولکولی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
Uniaxial deformation of three-dimensional nanocrystalline palladium containing porosity in the form of voids was investigated by means of molecular dynamics method. Simulations were performed at temperature of 300â¯K and at a constant strain rate of 108sâ1. Two cases of voids distribution were considered: random and at triple or quadrupole junctions. It has been revealed that both the voids distribution and subsequent annealing at elevated temperature influence the deformation behavior of nanocrystalline palladium. In particular, the presence of voids at grain junctions results in a reduction of the Young's modulus and more pronounced softening effect during plastic deformation. The subsequent annealing evokes shrinkage of voids and strengthening effect. Contribution of grain boundary accommodation processes into both elastic and plastic deformation of nanocrystalline materials is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 275, July 2018, Pages 43-47
Journal: Solid State Communications - Volume 275, July 2018, Pages 43-47
نویسندگان
D.V. Bachurin,