کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1582051 | 1514867 | 2008 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermal activation of fatigue crack growth: Analysing the mechanisms of fatigue crack propagation in superalloys
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Thermal activation of fatigue crack growth: Analysing the mechanisms of fatigue crack propagation in superalloys Thermal activation of fatigue crack growth: Analysing the mechanisms of fatigue crack propagation in superalloys](/preview/png/1582051.png)
چکیده انگلیسی
A method for deriving apparent activation energies, Eapp, for fatigue crack growth (FCG) is presented. It is shown how these Eapp values can be used to analyse the main underlying mechanism causing the progression of the crack. The Eapp values for fatigue crack growth in air and vacuum, and with and without a dwell are obtained for a range of Ni-based superalloys for turbine disc applications. The apparent activation energies range from about 0 to about 300 kJ/mol. The analysis allows identification of alloys that are prone to FCG through diffusion-controlled mechanisms, notably grain boundary oxidation or grain boundary creep, as well as alloys that are nearly immune to FCG by grain boundary oxidation or creep.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 491, Issues 1–2, 15 September 2008, Pages 279–289
Journal: Materials Science and Engineering: A - Volume 491, Issues 1–2, 15 September 2008, Pages 279–289
نویسندگان
M.J. Starink, P.A.S. Reed,