کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5146670 | 1497346 | 2017 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of hydrogen transport through pre-deformed synthetic polycrystals and homogeneous samples by finite element analysis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This study aims at comparing the hydrogen transport in polycrystals and in equivalent homogeneous material, with 3D FE simulations accounting for stress-assisted diffusion and trapping due to plastic strain, in order to examine the hydrogen concentration fields consistency in multi-scale simulations. The effective diffusion features are compared for various sizes of iron polycrystals. For trapping free diffusion, it is shown that hydrogen concentration fields are consistent between scales. When trapping is accounted for, effective diffusion in polycrystals and in homogeneous materials are different, underlying the importance of the trap density function formulation at different scales.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 31, 3 August 2017, Pages 20336-20350
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 31, 3 August 2017, Pages 20336-20350
نویسندگان
Yann Charles, Hung Tuan Nguyen, Monique Gaspérini,