کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7988622 | 1515863 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Alloying effects in polycrystalline γⲠstrengthened Co-Al-W base alloys
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A polycrystalline hot working ingot metallurgy processing route for γ/γⲠCo-Al-W superalloys has been developed. Based on Co-7Al-7W (at%), substitutions of Mo, V, Ti, Ta, Ni, Si, Fe and Cr were examined. The γⲠsolvus was found to follow the same trends as those exhibited by alloys with higher γⲠfractions considered by other investigators. Excessive Cr additions were found to lead to discontinuous coarsening and eventually, the loss of the γⲠphase from the microstructures observed. Ni additions were examined, with some success, and found to restore the γⲠphase and raise the solvus temperature. It was found that the addition of 13 at.% Cr improved the oxidation resistance at 800 °C by over 40 times.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 48, May 2014, Pages 44-53
Journal: Intermetallics - Volume 48, May 2014, Pages 44-53
نویسندگان
H.-Y. Yan, V.A. Vorontsov, D. Dye,