کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7722695 | 1497525 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hydrogen effect on thermodynamic stability of γ- and ε-phases in a Fe-Cr-Mn solid solution
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hydrogen effect on thermodynamic stability of γ- and ε-phases in a Fe-Cr-Mn solid solution Hydrogen effect on thermodynamic stability of γ- and ε-phases in a Fe-Cr-Mn solid solution](/preview/png/7722695.png)
چکیده انگلیسی
Ab initio calculations of the cohesion energy in the fcc γ- and hcp ε-phases of the hydrogen-free and hydrogen-charged Fe50Cr25Mn25 solid solutions are carried out in order to estimate the hydrogen effect on the γ â ε transformation. It is obtained that, at hydrogen contents within the range of 20-35 at.%, the fcc and hcp structures reveal a comparable thermodynamic stability with some preference for the hcp one. With further increase in the hydrogen content, the fcc phase is again stabilized. The comparison with similar calculations for the Fe50Cr25Ni25 solid solutions shows that, in contrast to expectations, the substitution of nickel for manganese in the austenitic steels retards the hydrogen-induced γ â ε transformation. The obtained results are also compared with available experimental data and discussed in terms of stacking fault energy changed under combined hydrogen, nickel and manganese effects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 20, 9 July 2013, Pages 8471-8477
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 20, 9 July 2013, Pages 8471-8477
نویسندگان
D.N. Movchan, B.D. Shanina, V.G. Gavriljuk,