کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7973688 | 1514629 | 2018 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Grain boundary migration-induced directional coarsening of the γʹ phase in advanced ultra-supercritical superalloy
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: Grain boundary migration-induced directional coarsening of the γʹ phase in advanced ultra-supercritical superalloy Grain boundary migration-induced directional coarsening of the γʹ phase in advanced ultra-supercritical superalloy](/preview/png/7973688.png)
چکیده انگلیسی
This study investigated the features of grain boundary regions in a Ni-based superalloy which underwent creep deformation. Large grain boundary zones were denuded in fine γʹ precipitates but contained coarsened microscale γʹ rods. The coarsening direction of these rods was along the <110> of the γ matrix and γʹ precipitates. The orientation of the grain boundary zone was the same as that of the adjacent grain behind the migrating boundary. This result indicated that the formation of these zones was accompanied by the migration of the grain boundary. Then, numerous slip features were observed through detailed local disorientation analysis. It is proposed that the driving force for the grain boundary migration was the local stress induced by the dislocation creep. The dissolution-reprecipitation of the precipitates at the boundary migration front resulted in the directional coarsening of the γʹ rods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 714, 31 January 2018, Pages 172-178
Journal: Materials Science and Engineering: A - Volume 714, 31 January 2018, Pages 172-178
نویسندگان
Huifang Li, Fei Ye, Jie Zhao, Tieshan Cao, Fanghong Xu, Qingshuang Xu, Yan Wang, Congqian Cheng, Xiaohua Min,