کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1565251 | 1514205 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular dynamics study of the effect of hydrogen on the mechanical properties of tungsten
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
The effect of hydrogen on the mechanical properties of single crystal BCC W as well as the intrinsic mechanism was investigated by using molecular dynamics method. The bond energy of tungsten atoms was computed and the results suggest that hydrogen atoms weaken the bonds. By simulating the response of tungsten under uniaxial tensile load, the stress-strain curves for different hydrogen concentration were obtained. It was found that hydrogen has great influence on the elastic modulus and plastic deformation mechanism. Moreover, the interaction between hydrogen atoms and dislocations was simulated. The qualitative relationship between yield stress and hydrogen concentration was obtained. All the numerical results suggest that the retention of hydrogen atoms causes significant degradation of the mechanical properties of tungsten.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 441, Issues 1â3, October 2013, Pages 324-330
Journal: Journal of Nuclear Materials - Volume 441, Issues 1â3, October 2013, Pages 324-330
نویسندگان
Xingang Yu, Fujun Gou, Xia Tian,