کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1575245 | 1514739 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamic recovery and recrystallization during high-temperature tensile deformation of a free-standing Pt-aluminide bond coat
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
چکیده انگلیسی
Free-standing Pt-aluminide (PtAl) bond coat, when subjected to tensile testing at high temperatures (Tâ¥900 °C), exhibits significant decrease in strength and increase in ductility during deformation at strains exceeding that corresponding to the ultimate tensile strength (UTS), i.e., in the post-UTS regime. The stress-strain curve is also marked by serrations in this regime. Electron back scattered diffraction (EBSD) and transmission electron microscopy (TEM) studies suggest dynamic recovery and recrystallization (DRR) as the mechanisms for the observed tensile behavior in the coating. Activation energy values suggest vacancy diffusion assists DRR. The fine recrystallized grains formed after deformation had a strong ã110ã texture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 604, 16 May 2014, Pages 18-22
Journal: Materials Science and Engineering: A - Volume 604, 16 May 2014, Pages 18-22
نویسندگان
Md. Zafir Alam, S.V. Kamat, V. Jayaram, Phani S. Karamched, P. Ghosal, D.K. Das,